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.
Dominant Culture. from http://www.wisegeek.org/what-is-a-dominant-culture.htm. A dominant culture is a culture that is the most powerful, widespread, or influential within a social or political entity in which multiple cultures are present.he culture that is dominant within a particular geopolitical region can change over time in response to internal or external factors, but one is usually very resilient and able to reproduce itself effectively from generation to generation.