A.FrideriekGriffith B.AlfredHershey C.MarthaChase D.OswaldAvery
A.5% B.10% C.15% D.20% E.30%
A.NK細(xì)胞 B.巨噬細(xì)胞 C.CD4T細(xì)胞 D.中性粒細(xì)胞 E.CTL