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Morphology and Enumeration of Human Blood Platelets

Morphology and Enumeration of Human Blood Platelets of formed elements are not the final criteria, but are useful guides in the evaluation of normal disturbed function of the hemopoietic system. However, in the case of the platelet the correlation between function remains insecure in spite of the extensive studies of Fonio (I). Furthermore the difkulty of counting , together with the wide range of reported normal values (2), have led some observers to doubt that generally acceptable stards can be set for normal platelet levels (3). The purpose of the paper is to show that the value of morphologic studies is limited by the prompt reaction of to numerous factors in the environment, but that enumeration of can, nevertheless, be accomplished with the same accuracy as that of white or red cell counts when a suitable diluent is used. ORPHOLOGY NUMBER MATERIALS METHODS Platelet Mo@uZogy. was collected from a cubital vein into a chemically clean, dry syringe, care being taken to avoid admixture of air bubbles. The was then rapidly added to test tubes containing the following anticoagulant solutions: 14 per cent magnesium sulfate, 3.2 per cent sodium citrate, 1.6 per cent potassium oxalate, I to 4 per cent ammonium oxalate, 0.8 per cent potassium http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Physiology The American Physiological Society

Morphology and Enumeration of Human Blood Platelets

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Publisher
The American Physiological Society
Copyright
Copyright © 1950 the American Physiological Society
ISSN
8750-7587
eISSN
1522-1601
Publisher site
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Abstract

of formed elements are not the final criteria, but are useful guides in the evaluation of normal disturbed function of the hemopoietic system. However, in the case of the platelet the correlation between function remains insecure in spite of the extensive studies of Fonio (I). Furthermore the difkulty of counting , together with the wide range of reported normal values (2), have led some observers to doubt that generally acceptable stards can be set for normal platelet levels (3). The purpose of the paper is to show that the value of morphologic studies is limited by the prompt reaction of to numerous factors in the environment, but that enumeration of can, nevertheless, be accomplished with the same accuracy as that of white or red cell counts when a suitable diluent is used. ORPHOLOGY NUMBER MATERIALS METHODS Platelet Mo@uZogy. was collected from a cubital vein into a chemically clean, dry syringe, care being taken to avoid admixture of air bubbles. The was then rapidly added to test tubes containing the following anticoagulant solutions: 14 per cent magnesium sulfate, 3.2 per cent sodium citrate, 1.6 per cent potassium oxalate, I to 4 per cent ammonium oxalate, 0.8 per cent potassium

Journal

Journal of Applied Physiology – The American Physiological Society

Published: Dec 1, 1950

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