INTEGBI 35AC Lecture Notes - Lecture 15: Natural Killer Cell, Gastric Acid, Bone Marrow
25 Oct 2016
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Document Summary
An agent (organism, virus, or protein) with the potential to cause disease. Melanin regulates the amount of sunlight entering the body a natural sunscreen. Physical barriers (skin, hair, mucus, cilia, tears, saliva, urine) Chemical factors (sebum, lysosome, gastric juice, vaginal secretions) Inside plasma: antimicrobial proteins, ingest things that are not supposed to be there. Cells release proteins that cause body"s temperature to rise. 10% increase in metabolism for every 1 degree body temp rises. Spleen will hold more iron inside it. Pathogenic agents need a lot of iron. T cells and b cells (white blood cell) When antibodies match antigens, immune response is evoked. Antigen: any molecule recognized by the immune system. Pathogen: agent with the potential to cause disease. Antibody: protein that recognizes antigen, produced by system. The better the match of the pathogen with the gene, the more replication and mutation happens.
