9.7.11

9.7.11 - BIO NOTES: 9.7.11 Step 2: Launch the attack o T...

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BIO NOTES: 9.7.11 Step 2: Launch the attack o T cell Cell-mediated immunity Destroys virus-infected or cancerous body cells T cell receptors bind to antigen T cells divide rapidly producing 2 types of cells o Effector cells (3 types) attack cells 1. Helper T cells stimulate cell division in killer T cells and B cells (HIV disrupts this process by destroying helper T cells) 2 . Killer (cytotoxic) T cells destroy cells in widespread infection/cancer Go through your body and look through cells and punches them full of holes. Similar to natural killers. Find cells with antigen on outside, binds and punches 3 . Suppressor T cells stop immune response o Memory T cells : provide future immunity to infection Step 3: Remember the invader o To ward off future attacks (winning one fight protects you from same enemy in future) o Plasma B cells and killer T cells short-lived, fight infection quickly Memory B and T cells live for years Future re-infections
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9.7.11 - BIO NOTES: 9.7.11 Step 2: Launch the attack o T...

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