Sir, I have a doubt about B and T cells. Do B and T cells engulf the pathogen and keeps these pathogen in their body for their life time so that if same kind of pathogen enters in our body for second time these B, T cells get activated. is it true??
1 Answer
B cells after activation in presence of an antigen it produces plasma cells,which produces antibody against the pathogen with the similar antigenic structure and after binding with its epitope it destroys the pathogen.
But some of these activated B cells form memory cells which are a step ahead of B cells in developing towards plasma cells,so that next time when these similar types of antigens are expressed,memory cells get converted quickly to plasma cells to produce antibodies against it,hence response is earlier.
On the other hand T cell also produces memory T cell during such process so as to decrease time for molecular cross talk in the pathway of forming complimentary T Cell Receptor(TCR) to bind antigenic structure of the pathogen.
They don't store any pathogen.
