题目内容

The iron-containing pigment in red blood cells that carries oxygen is called

查看答案

搜索结果不匹配？点我反馈

更多问题

are characterized by the presence of visible particlein their cytoplasm and by their multi-lobed .

A substance that induces the formation of antibodies is a(n) ___________

The cell fragments active in blood clotting are the ____

Two types of __ (white blood cells) are _ and ______