Results 211 to 220 of about 613,013 (269)
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Blood Platelets and Platelet Transfusions
Archives of Internal Medicine, 1961The application of quantitative biological and biochemical methods to the study of the blood platelets has led to revolutionary developments in our understanding of these elusive structures. 1 Until recently platelets were often regarded as non-cellular in nature, although it has long been known that they are of cellular origin.
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2013
Platelet counting is a daily basic hematological analysis of crucial interest in many clinical situations. Historical manual techniques (phase-contrast microscopy) have been replaced by automated techniques (impedance or optical analyzers) more rapid and precise.
Salignac, Sylvain +3 more
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Platelet counting is a daily basic hematological analysis of crucial interest in many clinical situations. Historical manual techniques (phase-contrast microscopy) have been replaced by automated techniques (impedance or optical analyzers) more rapid and precise.
Salignac, Sylvain +3 more
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Platelet aggregation by platelet-clumping substance
Thrombosis Research, 1974Abstract The platelet-clumping substance isolated from rabbit plasma by the authors aggregated washed rabbit platelets, while ADP did not. The presence of AMP or adenosine did not inhibit the appearance of platelet aggregation induced by the clumping substance.
H, Yamazaki +3 more
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Platelet Economy (Platelet Survival and Turnover)*
British Journal of Haematology, 1966Investigators studying blood platelet survival and turnover have used the term ‘thrombo‐kinetics’ to describe the subject, by analogy with the usages of thermodynamics. Inasmuch as these phenomena reflect the interactions and hazards which the platelets encounter while discharging their function in the circulation, we prefer the term ‘platelet economy’
J F, Mustard, H C, Rowsell, E A, Murphy
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Platelets and platelet disorders in Africa
Baillière's Clinical Haematology, 1992Blood platelets, which are known to play important roles in normal vertebrate biology, are influenced by a variety of factors, the majority of which are acquired. In this chapter, attention is drawn to the need to re-examine one of the old accepted values in haematology, the normal platelet count.
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Platelet calmodulin correlates with platelet turnover
European Journal of Haematology, 1990Abstract: We measured the calmodulin content in platelets in 13 normal persons and in 62 patients with hematological diseases. The level of platelet calmodulin was higher in patients with idiopathic thrombocytopenic purpura (ITP), systemic lupus erythematosus, myeloproliferative disorders, acute leukemia in a recovery phase, aplastic anemia ...
N, Endoh +4 more
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Biological Trace Element Research, 1988
Blood and its main components are commonly used to detect states of selenium deficiency. In order to examine whether human platelets are able to provide better or additional information, improvements of the analytical method resulted in surprisingly narrow normal ranges for selenium and other mineral elements using neutron activation analysis (NAA) and
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Blood and its main components are commonly used to detect states of selenium deficiency. In order to examine whether human platelets are able to provide better or additional information, improvements of the analytical method resulted in surprisingly narrow normal ranges for selenium and other mineral elements using neutron activation analysis (NAA) and
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Vox Sanguinis, 1992
An immune response to human platelet antigens (HPA), as in neonatal alloimmune thrombocytopenia (NAIT) and post-transfusion purpura (PTP), is the exception rather than the rule and evidence is accumulating for the importance of human leucocyte antigen (HLA) class II restriction in this situation.
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An immune response to human platelet antigens (HPA), as in neonatal alloimmune thrombocytopenia (NAIT) and post-transfusion purpura (PTP), is the exception rather than the rule and evidence is accumulating for the importance of human leucocyte antigen (HLA) class II restriction in this situation.
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Platelet Formation, Platelet Density and Platelet Ageing
1990Microscopic examination of both platelets and megakaryocytes shows them to vary widely in size and ultrastructure. This structural diversity was noted by early investigators (Bunting 1909) and interest in its origin and significance has continued to the present day.
K. G. Chamberlain +2 more
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Mechanism and control of platelet-platelet interactions
Microvascular Research, 1972Abstract With the technique of shadow-casting of whole platelets, it has been possible to observe both the very early events produced on the platelet surface by aggregating agents and what appears to be the entire process of platelet aggregation. It has been shown that a variety of aggregating agents and conditions such as ADP, thrombin, collagen ...
François M. Booyse +3 more
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