Compare and contrast how B cells and T cells respond to pathogens.

B cells produce and secrete antibodies, activating the immune system to destroy the pathogens.

T cells can only recognize viral anti-gens outside the infected cells whereas B cells can recognize the surface antigens of bacteria and viruses.

Helper T cells stimulate B cells to make antibodies and help killer T cells develop.

the cytokine-activated janus kinase (jak)-signal transducer and activator of transcription (stat) pathway has an important role in the control of immune responses. dysregulation of jak-stat signaling is associated with various immune disorders.