肾小球人球动脉的球旁细胞分泌的是()。
A.血管紧张素Ⅰ
B.血管紧张素Ⅱ
C.去甲肾上腺素
D.醛固酮
E.肾素
参考答案:E
免疫血液离心机都用于哪些方面?
--- Who will send you to the new school, your mom or your dad?
--- _______. I’ll go there by myself.
A.Both
B.Either
C.Neither
D.None