Which part of viral replication cycle characterizes eclipse phase? ()
A. attachment
B. penetration
C. uncoating
D. synthesis of viral components
E. none of the above
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Which complement has function of opsonization()
A. C1q
B. C1r
C2a
D. C3b
E. C5a
Which cytokine has the inhibitory function ()
A. TGF-β
B. EGF
C. VEGF
D. NGF
E. PDGF
What is the receptor of HIV ()
A. CD4
B. CD8
CD2
D. C3b
E. CD19
The ligand of MHC-Ⅰmolecule is ()
A. CD4
B. CD8
CD2
D. C3b
E. CD19