Senile purpura and platelets.
D000368:Aged; D001772:Blood Cell Count; D001780:Blood Coagulation Tests; D001792:Blood Platelets / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D010973:Platelet Adhesiveness; D011696:Purpura, Thrombocytopenic / Q000097:blood* / Q000503:physiopathology