B3-Infection and Response

Alternative transcript:

blood cells multiply and can respond quickly system so badly, it can no longer whith correct antibodies deal with infections to prevent infection -Late stage HIN damages immune or cancers 1 Non- 1-Specific defences -protective layer difficult to benetrau ·outer laye of dead cells is produces sebum which Kills bacteria skin scabs • Nose hair ~ mucus trop pathogens trachea a bronchi - have cilice full of mucus whick waft mucus upwords to swallow Stomach contain hydrochloric acid to kill pathogen Immune system destroys pathogens & taking produce pathoger enters again protect us if some • Skin at open word stomach white blood cells detects chemicals released from pathagen of moves towards it ingests pathogen • enzymes destroy pathoges or • antibodies are protein molecules produced they stick to pathogens which triggers them to be destroyed or • produce antitoxins which stick to toking to stop them damaging cells greatly reduced deaths but resistant strain is emerging • medicines that cure bacterial disease by killing infective bacterial specific bacteria should be treated by specific antibiotics Pain Killers Preclinical-animals, cells ~ • treat symptoms of disease but don't kill clinical-numans to find Eissues Pathogens dose •difficut to develop drugs to kill viruses but don't harm body 1-vaccinate mouse Monocional Antibodies Lissues to stimulate antibody 2- collect lymphocytes a fuse with tumour 3-grow hybridoma cells in tissue culture & select anti- to produce nybridoma cells body-forming cells New drugs foxglove - digitalis aspirin- willow trees Double bling Penecillium - -penecillin • some recieve drug recieve placebo 9 samo Producties cells 4 - collect monocional antibodies uses: pregnancy tests •measure hormones in blood (drug trials produce harmful • treating diseases • detect pathogens in blood • locate or identify molecules in a cell or tissue side effects) Plant disease. detected by • Stunted growth spot on leaves • areas of decay 6 presense of pests identification growths malformed stems or leaves dis colouration •garden manual / website taking plants to labatories "A testing Kits that contain monoclonal antibodies Nitrate-stunted growth ( protein Magnesium chlorosis (lack of chlorophyll) Aphids • extract nutrients from plant - Stunt growth Defence physical-resist invasion -cellulose cell wall - tough waxy cuticle -layers of dead cells chemical- T Synthesis) •difficult to penetrate - antibacterial chemicals poision to defer herbivores mechanical thorns hairs- deter animals leaves that droop or curve when touched - mimicry to trick animals