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Title: Cells have molecules on the outer surface of their membranes to distinguish whether they are friend ... Post by: FAITHBELLE on Apr 3, 2019 Cells have molecules on the outer surface of their membranes to distinguish whether they are friend or foe. These molecules are called ________. Title: Cells have molecules on the outer surface of their membranes to distinguish whether they are friend ... Post by: tlaster on Apr 3, 2019 antigens
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