BSC 1005 Lecture Notes - Lecture 24: Cytotoxic T Cell, Cell Membrane, Antigen
Document Summary
Hiv attacks helper t cells lymphatic system returns tissue fluid to the circulatory system and fights infection lymph nodes filter sites lymph stems from interstitial fluid. Nature and properties of energy and non - living matter. Social science the study of social life of human groups applied science. Applied the existing knowledge to develop practical applications epidemiology. The study of how often diseases occur in different groups of people and why. studies patterns, causes and effects of health and disease conditions in defined population. Steps of epidemiology: define a population, define and describe disease, measure disease: prevalence/incidence, compare disease and population, hypothesis (p,d,pi,c,h) Prevalence the proportion of disease found to be affecting a particular population (typically a disease or a risk factor such as smoking or seat-belt use) (how many/proportion) In epidemiology, a measure of the frequency with which an event occurs in a defined population over a specified period of time. (how often)
