a complex red organic pigment containing iron and other atoms to which oxygen binds
同义词：heme, haem, haemitin, protoheme
hematin详细解释
he.ma.tin n.（名词）A blue to blackish-brown compound, C34H 32N 4O 4·FeOH, formed in the decomposition of hemoglobin. 血红素：一种从蓝色到黑褐色的化合物C34H 32N 4O 4·FeOH，血红蛋白分解时形成
