BPK 140 Lecture Notes - Lecture 11: Humoral Immunity, Anal Sex, Anal Cancer
20 Apr 2016
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Document Summary
Bacteria, virus) invades the body of a host which is typically accompanied by damage to cells. Invasion is followed by a latent period ( time between infection and the development of symptoms/signs. How your body protects itself (first line defence) Your body recognizes pathogens as foreign because they have an antigen on their surface that is different than your cellular antigens pp> it will then launch an immune response to eliminate that pathogen. Protects against parasites, fungi, cancer cells, foreign tissue. Consists primarily of macrophages and various t-cells. Thousands of t cell work together to kill pathogens. The immunity provided by antibodies (produced by b cells) Antibodies: specific proteins that stick to the specific antigens of pathogens. Factors that put young people at risk of stis"s. Most common route of infection: unprotected sexual transmission. Frequent sexual activity with multiple, anonymous partners and high-sexual practices such as anal intercourse increase risk.
