Can phagocytes detect pathogens?
Do they detect and attack/engulf pathogens automatically, or must they be activated by other leukocytes first?
- Richard SalaamLv 56 years agoFavorite Answer
A phagocyte recognizes the cells of the bod (self). It's receptors match the antigens on the cells from the same body. Whatever pathogen or damaged cell does not have these antigens, the phagocyte will kill it.
Now, phagocytes are not that many to stop a major infection. Here comes the specific immunity. Specific immunity is given by antibodies that bind with a pathogen specifically. These antibody-pathogen complexes attract a different kind of white cell which is in great numbers. This cell, sends a signal to the phagocytes and they come in great numbers to the infection spot. :) :)