Autoimmunity is a(n):

a. automatic response to an antigen.
b. failure of self cell recognition.
c. reaction to environmental antigens.
d. normal response to infection.
e. response between the autonomic nervous system and the immune system.


b

Biology & Microbiology

You might also like to view...

A site of negative genetic regulation where binding by repressor blocks transcription is the  

A.  operon. B.  repressor. C.  promoter. D.  operator. E.  CAP.

Biology & Microbiology

Restriction endonucleases recognize specific sequences in the DNA

Indicate whether the statement is true or false

Biology & Microbiology

Cross-bridges form between _____ and _____ during muscular contraction.

A. actin, myosin B. actin, tropomyosin C. myosin, troponin D. myosin, tropomyosin E. troponin, calmodulin

Biology & Microbiology

Which gas is increasing in the atmosphere and

intensifying the greenhouse effect? a. carbon dioxide b. carbon monoxide c. ozone d. nitrogen e. oxygen

Biology & Microbiology