Which of the following cells originate locally and spend all their life in the connective tissue?
A.
Mast cells
B.
Plasma cells
C.
Macrophages
D.
Fibroblasts
E.
Leukocytes
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举一反三
【简答题】listen to the British student’s talk about why college students start their business and try to identify the signal words she uses to express cause and effect.