The circulatory system — Biology STD 10 — Question
ICSE BoardEnglish MediumSTD 10BiologyThe circulatory system2 Marks
Question
What is Rh factor?
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Answer
Rh factor - It is an inherited antigen often found on the blood cells. Some individuals have these antigens and are thus Rh positive (Rh+) while others who do not have this antigen are Rh negative (Rh-).
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