A.淋巴細(xì)胞 B.病毒 C.中性粒細(xì)胞 D.細(xì)菌 E.原蟲(chóng)
A.40%~50% B.50%~60% C.60%~70% D.70%~80% E.≥80%
A.-20℃ B.-30℃ C.-60℃ D.-80℃ E.-196℃