SELECT bleeding_time FROM table_1555308_1 WHERE platelet_count = "Decreased" AND prothrombin_time = "Unaffected"
Bagaimana waktu perdarahan di mana jumlah trombosit berkurang dan waktu protrombin tidak terpengaruh?
CREATE TABLE table_1555308_1 (bleeding_time VARCHAR, platelet_count VARCHAR, prothrombin_time VARCHAR)