Junctional diversity of antibody molecules results from
A. The addition of switch region nucleotides
B. The addition of N and P nucleotides
C. The joining of V, D and J segments
D. Mutations in complementarity-determining regions
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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