【医】 aminopterin
clear; free of charge; in vain; pure; white; whiteness
【化】 leuco-; leuko-
【医】 albo-; leuco-; leuk-; leuko-
blood; lifeblood; related by blood
【医】 blood; haem-; haemato-; haemo-; hem-; hemat-; hemato-; hemo-; sangui-
sanguis
peaceful; rather; tranquil