Angina pectoris, commonly known as angina, is the sensation of chest pain, pressure, or squeezing, often due to ischemia of the heart muscle from obstruction or spasm of the coronary arteries.
Pure Culture. A pure culture is a population of cells or multicellular organisms growing in the absence of other species or types.
When used as a count noun a culture, is the set of customs, traditions and values of a society or community, such as an ethnic group or nation.ulture (/ËkÊltÊÉr/) is, in the words of E.B. Tylor, that complex whole which includes knowledge, belief, art, morals, law, custom and any other capabilities and habits acquired by man as a member of society..