CREATE TABLE table_238124_1 (platelet_count VARCHAR(255), bleeding_time VARCHAR(255), prothrombin_time VARCHAR(255))
When the bleeding time is unaffected and prothrombin time is prolonged, what are the platelet counts?
    
SQL: SELECT platelet_count FROM table_238124_1 WHERE bleeding_time = "Unaffected" AND prothrombin_time = "Prolonged"