Immune cells distinguish "self" from "nonself" by recognizing:
A) cellular RNA.
B) major histocompatibility antigens.
C) different types of phospholipids in a cell's membrane.
D) "nonself" enzymes secreted by foreign cells.
Answer: B
Immune cells distinguish "self" from "nonself" by recognizing:
A) cellular RNA.
B) major histocompatibility antigens.
C) different types of phospholipids in a cell's membrane.
D) "nonself" enzymes secreted by foreign cells.
Answer: B