December 1, 2015

Homework Help: Health

Posted by Anonymous on Monday, November 3, 2008 at 12:08pm.

Blood typing is based on ______ on the surface of the red blood cells.

A. antigens
B. protein
C. antibodies
D. a Rubella titer

i am thinking B again im not 100% just wanted to see if i was correct. please help

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