SU753346A3 - Способ получени суспензии клеток - Google Patents
Способ получени суспензии клеток Download PDFInfo
- Publication number
- SU753346A3 SU753346A3 SU782639945A SU2639945A SU753346A3 SU 753346 A3 SU753346 A3 SU 753346A3 SU 782639945 A SU782639945 A SU 782639945A SU 2639945 A SU2639945 A SU 2639945A SU 753346 A3 SU753346 A3 SU 753346A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mixture
- cells
- platelets
- blood
- white
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 5
- 239000006285 cell suspension Substances 0.000 title 1
- 210000000265 leukocyte Anatomy 0.000 claims abstract description 11
- 210000004369 blood Anatomy 0.000 claims abstract description 10
- 239000008280 blood Substances 0.000 claims abstract description 10
- 210000004027 cell Anatomy 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 14
- 239000003599 detergent Substances 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 5
- -1 polyoxyethylene Polymers 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 4
- 230000004069 differentiation Effects 0.000 claims description 4
- 239000000600 sorbitol Substances 0.000 claims description 4
- 210000003743 erythrocyte Anatomy 0.000 claims description 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 3
- 238000011534 incubation Methods 0.000 claims description 2
- 239000003219 hemolytic agent Substances 0.000 claims 1
- 238000000149 argon plasma sintering Methods 0.000 abstract description 5
- 238000004820 blood count Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000010186 staining Methods 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000008098 formaldehyde solution Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920001213 Polysorbate 20 Polymers 0.000 description 1
- 125000000218 acetic acid group Chemical class C(C)(=O)* 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000003979 eosinophil Anatomy 0.000 description 1
- 229960004279 formaldehyde Drugs 0.000 description 1
- 235000019256 formaldehyde Nutrition 0.000 description 1
- 230000002949 hemolytic effect Effects 0.000 description 1
- 230000000155 isotopic effect Effects 0.000 description 1
- 210000004698 lymphocyte Anatomy 0.000 description 1
- 210000001616 monocyte Anatomy 0.000 description 1
- 210000000440 neutrophil Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5094—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for blood cell populations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/30—Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
- G01N2001/305—Fixative compositions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/10—Composition for standardization, calibration, simulation, stabilization, preparation or preservation; processes of use in preparation for chemical testing
- Y10T436/101666—Particle count or volume standard or control [e.g., platelet count standards, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/10—Composition for standardization, calibration, simulation, stabilization, preparation or preservation; processes of use in preparation for chemical testing
- Y10T436/107497—Preparation composition [e.g., lysing or precipitation, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/10—Composition for standardization, calibration, simulation, stabilization, preparation or preservation; processes of use in preparation for chemical testing
- Y10T436/108331—Preservative, buffer, anticoagulant or diluent
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Urology & Nephrology (AREA)
- Chemical & Material Sciences (AREA)
- Cell Biology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Hematology (AREA)
- Physics & Mathematics (AREA)
- Microbiology (AREA)
- Ecology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Biotechnology (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Description
осущестл ют суспензией с использованием Од5%-ной уксусной кислоты - солевой раствор . При этом улучшаетс соотношение сигналов тромбоцито|В « шумам, четкое разделение , тромбоцитов и похожих красных клеток и лейкоцитов и хо,рошо -сохран ютс исходные индивидуальные объемы тромбоцитов . Можно , а в некоторых случа х П1редпочтительно, частично разбавить образец, добавл изотонический солевой 1раство,р перед стадией обработки детергентом .
Дл определени белых кров ных клеток образец разбавл ют путем добавлени изотопического солевого раствора, цредлочтительню после стадии имкубадии. Образец может быть разбавлен и перед стадией обработки детергентом. Разбавленна суснензи белых кров ных 1клеток сохран ет морфологию белых клеток, позвол разделить неокрашенные белые клетки с помощью светорассе ни под малыми и большими углами, и дает возможность дифференцировать лимфоциты, моноциты, нейтрофилы и эозинофилы без окрашивани .
Пример 1. К антикоа1гулированному цельному образцу крови (0,1 мл) прибавл ют 0,32 л{л 1%-ного раствора полиоксиэтилен 20 сорбитан монолаурата (в изотогшческом Солевом растворе), полученную смесь оставл ют дл инкуба/ции при комнатной температуре в течение 1 мин.
К смеси при перемешивании прибавл ют сбуферированный фосфатом раствор формальдегида (0,42 мл), содержащий 8 об. % фор.м альдегид а, и инкубируют полученную смесь 2 мин при 57° С. Определение белых кров ных «леток осуществл ют путем добавлени к инкубированной смеси 1,2 мл изотонического солевого раствора, и с помощью светорассе ни п|роБОд т .подсчет белых .кров ных клеток.
Дл определени тромбоцитов к инкуби;роваиной выше смеси прибавл ют 1,2 мл изотонического солевого раствора. Прибавл ют 0,1 мл полученной смеси к 4,0 мл 0,5%-ного раство.ра уксусной кислоты - изотонического солевого раствора. С помощью светорассе ни провод т подсчет тромбоцитов и И31мерение их размеров.
Пример 2. Разбавл ют 0,0. мл антиКоагулирова-нной капилл рной цельной крови в соотношении l:lb изотоническим солевым раствором, и 0,1 жл полученной смеси прибавл ют к 0,32 Л1уг 0,125%-ного раствора полиоксиэтилен 20 сорб тан монолаурата (в изотоническом солевом растворе). Смесь инкубируют 1 мин при комнатной температуре, к ней при перемешивании прибавл ют 0,42 мл сбуферированного фосфатом раствора формальдегида, со.держащего 8 об. % формальдегида, и инкубируют при 57° С в течение 2 мин.
Диффе;ренцированный подсчет белых кров ных клеток в приведенной выше суспензии осуществл ют с помощью cBCTOipассе ни .
Оп,ределение трО|М1боц.итов осуществл ют прибавлением к инкуби рованной выше смеси 1,2 мл изотонического солевого раствора , 0,1 мл полученной смеси прибавл ют к 1,0 мл 0,5%-ного раствора уксусной кислоты - изотонический солевой раствор. С помощью светорассе ни провод т подсчет тромбоцитов и измерение их раз.меров.
Предлагаемый способ позвол ет дифференцировать тромбоциты от лейкоцитов и эритроцитов.
Ф о .р м у л а изобретени
Способ получени суспензии .клеток путем обработки юрови формальдегидом, добавлени гемолизируюшего агента, отличающийс тем, что, С целью обеспечени возможн01сти дифференциации тромбоцитов от лейкоцитов и эритроцитов, перед введением формальдегида кровь обрабатывают детергентом, таким как полиоксиэтилеи 20 сорбитаи монолаурат концентрации от 0,3 до 2,0% по отношению к смеси, при рН от 6 до 8 с последующим инкубированием смеси при температуре от 56° С до 62° С в течение 2 лы .
Источник информации,
прин тый во внимание цри экспертизе:
1. Патент США № 3741875,
кл. С 12 Р 1/04, опубл. 1973.
Claims (1)
- Формула изобретенияСпособ получения суспензии клеток пу35 тем обработки крови формальдегидом, добавления гемолизирующего агента, отличающийся тем, что, с целью обеспечения возможности дифференциации тромбоцитов от лейкоцитов и эритроцитов, перед введе40 нием формальдегида кровь обрабатывают детергентом, таким как полиоксиэтилен 20 сорбитам монолаурат концентрации от 0,3 до 2,0% по отношению к смеси, при pH от 6 до 8 с последующим инкубированием 45 смеси при температуре от 55° С до 62° С в течение 2 мин.Источник информации, принятый во внимание при экспертизе:50 1. Патент США № 3741875, кл. С 12 Р1/04, опубл. 1973.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/817,595 US4099917A (en) | 1977-07-21 | 1977-07-21 | Process for preparing a cell suspension from blood for discrimination of white blood cells and platelets from other blood particles |
Publications (1)
Publication Number | Publication Date |
---|---|
SU753346A3 true SU753346A3 (ru) | 1980-07-30 |
Family
ID=25223431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782639945A SU753346A3 (ru) | 1977-07-21 | 1978-07-04 | Способ получени суспензии клеток |
Country Status (13)
Country | Link |
---|---|
US (1) | US4099917A (ru) |
JP (1) | JPS5422891A (ru) |
AU (1) | AU515945B2 (ru) |
BE (1) | BE868071A (ru) |
CA (1) | CA1085280A (ru) |
CH (1) | CH640948A5 (ru) |
DE (1) | DE2830524A1 (ru) |
FR (1) | FR2398305A1 (ru) |
GB (1) | GB1597638A (ru) |
IT (1) | IT1111407B (ru) |
NL (1) | NL7803424A (ru) |
SE (1) | SE446911B (ru) |
SU (1) | SU753346A3 (ru) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2961321D1 (en) * | 1978-11-01 | 1982-01-14 | Contraves Ag | Method for the reduction of the disturbance of photometric measurements by light scatter in a suspension to be measured and reagent for carrying out the method |
US4284412A (en) * | 1979-07-13 | 1981-08-18 | Ortho Diagnostics, Inc. | Method and apparatus for automated identification and enumeration of specified blood cell subclasses |
US5045472A (en) * | 1981-06-26 | 1991-09-03 | Technicon Instruments Corporation | Reagent mixture and composition for treating red blood cells to effect sphering |
US4465774A (en) * | 1981-07-16 | 1984-08-14 | Sherwood Medical Company | Standard or control material for glysocylated or total hemoglobin determination |
US4528274A (en) * | 1982-07-06 | 1985-07-09 | Coulter Electronics, Inc. | Multi-purpose blood diluent and lysing agent for differential determination of lymphoid-myeloid population of leukocytes |
US4637986A (en) * | 1983-08-22 | 1987-01-20 | Ortho Diagnostic Systems, Inc. | Flow cytometry lysing reagent with leukoprotective agent for producing a 3-part WBC count |
US4704364A (en) * | 1984-05-18 | 1987-11-03 | Coulter Electronics, Inc. | Hematology control compositions for three populations of leukocytes; and methods for their preparation and use in whole blood control systems |
US4751179A (en) * | 1984-05-31 | 1988-06-14 | Coulter Electronics, Inc. | Method and reagents for differential determination of four populations of leukocytes in blood |
EP0182874B1 (en) * | 1984-05-31 | 1993-10-20 | Coulter Corporation | A reagent system and method for identification, enumeration and examination of classes and subclasses of blood leukocytes |
US4745071A (en) * | 1985-09-05 | 1988-05-17 | Sequoia-Turner Corporation | Method for the volumetric differentiation of blood cells types |
US4801549A (en) * | 1985-09-06 | 1989-01-31 | Technicon Instruments Corporation | Method for the determination of a differential white blood cell count |
US4978624A (en) * | 1985-09-06 | 1990-12-18 | Technicon Instruments Corporation | Reagent for the determination of a differential white blood cell count |
JPS62242854A (ja) * | 1986-04-15 | 1987-10-23 | Kyoto Ikagaku Kenkyusho:Kk | 血液の血小板凝集阻止方法 |
JPH06100596B2 (ja) * | 1986-09-10 | 1994-12-12 | 東亜医用電子株式会社 | フロ−サイトメトリ−による白血球の分類方法 |
IL85532A (en) * | 1987-03-13 | 1992-03-29 | Coulter Electronics | Method and lytic reagent system for isolation,identification and/or analysis of leukocytes from whole blood samples |
US5155044A (en) * | 1987-03-13 | 1992-10-13 | Coulter Electronics, Inc. | Lysing reagent system for isolation, identification and/or analysis of leukocytes from whole blood samples |
US5045474A (en) * | 1987-05-28 | 1991-09-03 | Sequoia-Turner Corporation (Unipath) | Semi-automatic process for white cell differential count |
WO1988009504A1 (en) * | 1987-05-29 | 1988-12-01 | Toa Medical Electronics Co., Ltd. | Method for classifying leukocytes and reagents |
US5389549A (en) * | 1987-05-29 | 1995-02-14 | Toa Medical Electronics Co., Ltd. | Method for classifying leukocytes and a reagent used therefor |
JP2619900B2 (ja) * | 1988-01-27 | 1997-06-11 | 東亜医用電子株式会社 | 血液中の白血球およびヘモグロビンの測定用試薬および方法 |
US5008202A (en) * | 1988-11-29 | 1991-04-16 | Sequoia Turner Corporation | Blood diluent for red blood cell analysis |
CA2016699C (en) * | 1989-05-15 | 2003-11-18 | Paul N. Marshall | Lytic agents and uses thereof |
US5620852A (en) * | 1990-11-14 | 1997-04-15 | Hri Research, Inc. | Nucleic acid preparation methods |
US5284940A (en) * | 1990-11-14 | 1994-02-08 | Hri Research, Inc. | Preparation for nucleic acid samples |
US5654179A (en) * | 1990-11-14 | 1997-08-05 | Hri Research, Inc. | Nucleic acid preparation methods |
US5460797A (en) * | 1991-05-08 | 1995-10-24 | Streck Laboratories, Inc. | Method for fixing tissues and cells for analysis using oxazolidine compounds |
US5849517A (en) * | 1991-05-08 | 1998-12-15 | Streck Laboratories, Inc. | Method and composition for preserving antigens and nucleic acids and process for utilizing cytological material produced by same |
US5459073A (en) * | 1991-05-08 | 1995-10-17 | Streck Laboratories, Inc. | Method and composition for preserving antigens and process for utilizing cytological material produced by same |
WO1992019966A1 (en) * | 1991-05-09 | 1992-11-12 | Streck Laboratories, Inc. | White blood cell hematology control |
US5270208A (en) * | 1991-05-09 | 1993-12-14 | Streck Laboratories, Inc. | White blood cell hematology control |
US5262327A (en) * | 1991-05-09 | 1993-11-16 | Streck Laboratories, Inc. | White blood cell hematology control |
US6509192B1 (en) * | 1992-02-24 | 2003-01-21 | Coulter International Corp. | Quality control method |
JP3301646B2 (ja) * | 1993-03-19 | 2002-07-15 | シスメックス株式会社 | 幼若細胞測定用試薬 |
US5639630A (en) * | 1995-05-16 | 1997-06-17 | Bayer Corporation | Method and reagent composition for performing leukocyte differential counts on fresh and aged whole blood samples, based on intrinsic peroxidase activity of leukocytes |
US6200500B1 (en) | 1999-08-20 | 2001-03-13 | Streck Laboratories, Inc. | Hematology control and system for multi-parameter hematology measurements |
US6221668B1 (en) | 1999-08-20 | 2001-04-24 | Streck Laboratories, Inc. | Hematology control and system for multi-parameter hematology measurements |
US6514763B2 (en) | 2000-04-28 | 2003-02-04 | Hematronix, Inc. | Hematology blood control and method for preparation of same |
US6759246B1 (en) | 2001-11-30 | 2004-07-06 | Research & Diagnostic Systems, Inc. | Hematology control composition including lymphocyte analogs and method for preparation and use |
US6723563B2 (en) | 2001-12-03 | 2004-04-20 | Streck Laboratories Inc. | Hematology reference control |
US6653137B2 (en) | 2001-12-03 | 2003-11-25 | Streck Laboratories Inc. | Hematology reference control |
JP5162177B2 (ja) * | 2007-07-31 | 2013-03-13 | シスメックス株式会社 | 粒子分析装置及び粒子分析方法 |
EP2525222A1 (en) | 2011-05-17 | 2012-11-21 | Markus M. Heiss | Initial relative lymphocyte count as predictive biomarker |
CN111602052B (zh) | 2018-04-28 | 2021-10-12 | 深圳迈瑞生物医疗电子股份有限公司 | 一种血液检测方法及血液分析系统 |
US11521401B2 (en) * | 2020-07-31 | 2022-12-06 | Bridging Biosciences, LLC | Fertility window prediction using a convolutional neural network (CNN) and other learning methods |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3741875A (en) * | 1970-10-30 | 1973-06-26 | Mount Sinai Res Foundation Inc | Process and apparatus for obtaining a differential white blood cell count |
US3884579A (en) * | 1973-06-14 | 1975-05-20 | Cambridge Chemical Products In | Method for counting blood platelets |
US4040785A (en) * | 1976-10-18 | 1977-08-09 | Technicon Instruments Corporation | Lysable blood preservative composition |
-
1977
- 1977-07-21 US US05/817,595 patent/US4099917A/en not_active Expired - Lifetime
-
1978
- 1978-02-15 SE SE7801766A patent/SE446911B/sv not_active IP Right Cessation
- 1978-02-22 CA CA297,436A patent/CA1085280A/en not_active Expired
- 1978-03-08 GB GB9252/78A patent/GB1597638A/en not_active Expired
- 1978-03-31 NL NL7803424A patent/NL7803424A/xx not_active Application Discontinuation
- 1978-04-30 JP JP5215778A patent/JPS5422891A/ja active Pending
- 1978-05-11 IT IT68082/78A patent/IT1111407B/it active
- 1978-06-13 BE BE188529A patent/BE868071A/xx not_active IP Right Cessation
- 1978-06-13 FR FR7817598A patent/FR2398305A1/fr active Granted
- 1978-06-23 AU AU37400/78A patent/AU515945B2/en not_active Expired
- 1978-07-04 SU SU782639945A patent/SU753346A3/ru active
- 1978-07-12 DE DE19782830524 patent/DE2830524A1/de active Granted
- 1978-07-20 CH CH786278A patent/CH640948A5/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2398305B1 (ru) | 1983-11-18 |
CH640948A5 (de) | 1984-01-31 |
IT1111407B (it) | 1986-01-13 |
NL7803424A (nl) | 1979-01-23 |
CA1085280A (en) | 1980-09-09 |
BE868071A (fr) | 1978-12-13 |
AU3740078A (en) | 1980-01-03 |
SE446911B (sv) | 1986-10-13 |
GB1597638A (en) | 1981-09-09 |
FR2398305A1 (fr) | 1979-02-16 |
DE2830524A1 (de) | 1979-02-01 |
JPS5422891A (en) | 1979-02-21 |
DE2830524C2 (ru) | 1987-11-12 |
SE7801766L (sv) | 1979-01-22 |
AU515945B2 (en) | 1981-05-07 |
IT7868082A0 (it) | 1978-05-11 |
US4099917A (en) | 1978-07-11 |
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