The most common cause for a hypochromic microcytic anemia is iron deficiency.

小细胞低素性贫血最主要的原因铁缺乏。

Oculocutaneous albinism(OCA) is a group of autosomal recessive disorders of melanin synthesis,which is characterized by congenital hypopigmentation of skin,hair and eyes.

眼皮肤白化于黑素合基因突变导致眼、皮肤、毛发黑素沉着减少或缺乏引起的一类常染体隐形遗传疾的总称。