CREATE TABLE table_1226250_1 (partial_thromboplastin_time VARCHAR(255), bleeding_time VARCHAR(255), prothrombin_time VARCHAR(255))
How long does thromboplastin last when prothrombin is unaffected?
    
SQL: SELECT partial_thromboplastin_time FROM table_1226250_1 WHERE bleeding_time = "Unaffected" AND prothrombin_time = "Unaffected"