Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Helper T cells dzinoratidza T cell receptors (TCR) dzinoziva antigen inosungirirwa kuClass II MHC molecules. MHC:antigen complex inozivikanwawo neCD4 co-receptor yesero remubatsiri, iyo inoshandisa mamorekuru ari mukati meT cell (semuenzaniso, Lck) ayo anokonzeresa activation yeT cell. Helper T cells dzine hukama husina kusimba neMHC:antigen complex kupfuura hunoonekwa mumasero eT anouraya, zvichireva kuti ma receptors akawanda (anenge 200<unk>300) ari pa helper T cell anofanirwa kusungwa neMHC:antigen kuitira kuti ashande helper cell, nepo killer T cells ichigona kumisikidzwa nekubatana kweimwe MHC:antigen molecule. Kugadziriswa kwemasero eT anobatsira kunodawo nguva yakareba yokubatana nesero rinopa antigen. Kuita basa kwetsinga yeT yakazorora kunoiita kuti ibudise ma cytokine ayo anokanganisa kushanda kwemarudzi akawanda etsinga. Zviratidzo zvecytokine zvinogadzirwa nemasero eT anobatsira zvinowedzera kushanda kwemakrofagi uye kushanda kwemasero eT anouraya. Mukuwedzera, kushanda kwemasero eT anobatsira kunokonzera kuwedzera kwemamolekyu anoratidzwa pamusoro pemasero eT, akadai seCD40 ligand (inonziwo CD154), iyo inopa zviratidzo zvekuwedzera zvinokurudzira zvinowanzodiwa kuti zvigadzire masero eB- anogadzira antibody.  Mubvunzo: TCR inoziva antigen yakabatanidzwa norudzii rwamamorekuru?
Kirasi II MHC mamorekuru