PSYC 314 Lecture Notes - Viral Load, Aids, Hiv
Document Summary
Natural immunity: general responsiveness in response to many pathogens. Responds to things which are seen not as self. They do not remember what the pathogens are for future reference. Specific immunity: receptor cites on their cell which can only attack only one type of invader/ angtogen. When the pathogen enters the body the specific cells notice it and divide in order to fight the invaders. Delayed response b/c of their need to divide (it takes days). Immunologic memory: they are able to remember a type of pathogen in order to respond faster if they are invaded again. B cells -- humoral immunity (when they respond to pathogens by producing antibodies) t cells -- cellular immunity (tc-- secrete toxic substances which cause them to kill infected cells. Th cells -- t helper cells secrete cytokines which enhance the production of other cells, help proliferation of. Measures of the immune system: enumerative e. g. , # of natural killer cells.
