cell-mediated response

Cards (12)

Where do T lymphocytes originate? 
the stem cells in the bone marrow
where are t lymphocytes activated 
thymus gland
what happens when phagocytes engulf a pathogen 
the pathogen is hydrolysed into component parts
how will a phagocyte become a antigen presenting cell 
the pathogen will be hydrolysed into component parts and then the phagocyte can then present some of the hydrolyzed parts of the pathogens
what are other antigen presenting cells 
b lymphocytes and infected body cells
what is a antigen presenting cell 
this is a group of cells that mediate a cellular immune response by presenting antigens for other lymphocytes to recognise
when a t lymphocyte detects a specific Antigone on an antigen presenting cell it stimulates clonal expansion - what three type of cells will be made from one t lymphocytes 
t helper cells , t memory cells and cytotoxic T cells
what do t helper cells produce 
cytokines
what two things do cytokines stimulate 
more phagocytic cells to migrate to infected tissue and they stimulate clonal expansion of plasma b cells to make and secrete antibodies
what do phagocytic cells do 
these are cells that eat and digest pathogens
what are t memory cells 
these are cells that remain dormant in the circulation and then divide rapidly by clonal expansion to form more t lymphocytes if the same antigen is encounter again
what are cytotoxic t cells 
these kill infected body cells by lysing the cells