1 Select the Triggers tab, and then select New. 2  Set your time and frequency, and then select OK. 3  Open Windows Defender by clicking the Start button. In the search box, type Defender and then, in the list of results, click Windows Defender.  Click Tools, and then click Options.
â Platelet refractoriness is the inability to get an adequate increase in platelet count after transfusion (Arch Pathol Lab Med 2003;127:409, Haematologica 2005;90:247) â Immune causes: anti-platelet or anti-HLA antibodies after multiple exposures from transfusion, pregnancy or transplantation (Transfusion 2005;45:761)
Platelets, also known as thrombocytes, are a type of white blood cell manufactured by bone marrow. They are crucial to the process of blood clotting and wound healing. Platelet disorders may be acquired or congenital. Acquired platelet defects include chronic mylogenous leukemia, multiple myeloma and kidney disease.