题目内容

T lymphocytes, mature in the thymus gland and produce _________.

A. systolic pressure
B. diastolic pressure
C. humoral immunity
D. cell-mediated immunity

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Which components cannot be tested in serum

A. electrolytes
B. albumin
C. fibrinogen
D. enzymes

Erythrocytes originate in the bone marrow, and their production is stimulated by______ which is secreted by the kidney.

A. erythropoietin
B. endothelium
C. urea
D. rennin

Which chemical cannot be classified into a protein?

A. heparin
B. erythropoietin
C. interleukin
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The liquid portion of blood is termed______