Question4  

The earliest identifiable T cell linage is: 

 a) CD7 cells b) CD2 cells c) CD3 cells d) CD4 cells  

 Question5  

B cells which may be associated with the causation of autoimmune diseases are: 

 a) Plasma cells b) B1 (CD5+) cells c) Memory cells d) Naive B cells  

Virus infect, which will respond?

Nk cell and Tc cell

IgM when produced?

Q) E.coli + H. Pylori we drink?

H pylori survive bcz of pH.

Thymus degenerate after puberty