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.
Definitions. 1  Dominant Culture â the dominant culture of a society refers to the main culture in a society which is shared or accepted without any opposition by the majority of a population. For example having your hair dyed green would be seen as unacceptable by the vast majority of the population.