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. In this sense, multiculturalism is a concept that values the peaceful coexistence and mutual respect between different cultures inhabiting the same territory. Sometimes culture is also used to describe specific practices within a subgroup of a society, a subculture (e.g. bro culture), or a counter culture.