A neonatally thymectomized mouse, immunized with protein antigen shows
A. Both primary and secondary responses to the antigen
B. Only primary response to the antigen
C. Delayed type hypersensitive reactions
D. No response to the antigen
Answer: Option B
This Question Belongs to Biotechnology Engineering >> Immunology In Biotechnology
A. Arginine
B. Asparagine
C. Cysteine
D. Histidine
Recombinant live attenuated vaccine against hepatitis B was prepared from
A. Plasma of chronically infected individual
B. Recombinant yeast expressing hepatitis B surface antigen
C. Recombinant vaccinia virus expressing hepatitis B surface antigen
D. Transgenic plants expressing hepatitis B surface antigen
A. P and R only
B. P and Q only
C. Q and R only
D. P, Q and R
Which one of the following complement proteins is the initiator of the membrane attack complex?
A. C3a
B. C3b
C. C5a
D. C5b
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