A subject with type O blood has
A) Erythrocytes carrying type A antigen
B) Erythrocytes carrying type B antigen
C) Antibodies to type A and type B antigen in his/her plasma
D) Erythrocytes carrying type A antigen and erythrocytes carrying type B antigen
E) None of these things
Correct Answer:
Verified
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A)Secreted by helper T cells
B)Cytokines
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A)Are secreted by plasma cells
B)Protect against viruses
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