Which gene of following molecule locate on MHC-Ⅲ gene region ()
A. IGF-β
B. IFN
CSF
D. TNF
E. LIF
查看答案
Cytokines include ()
A. TCR
B. IFN
C. BCR
D. C4
E. B factor
Prokaryotes do not include ()?
A. mycoplasma
B. chlamydia
C. rickettsia
D. virus
E. none of the above
Who is the first man observed microorganism under microscope ()
A. Louis Paseur
B. Robert Kock
C. Leeuwenhoek
D. Walter Reed
E. none of the above
The special components of Gram-positive cell wall is ()
A. peptidoglycan
B. chitin
C. cholesterol
D. teichoic acids
E. none of the above