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.
Chinese culture (simplified Chinese: ä¸­å½æå; traditional Chinese: ä¸­åæå; pinyin: ZhÅngguo zhÅngguÃ³) wenhua wÃ©nhuÃ  is one of'the world s. Oldest cultures the area in which the culture is dominant covers a large geographical region In eastern asia with customs and traditions varying greatly, between, provinces cities and even towns. as wellusic and dance were closely associated in the very early periods of China. The music of China dates back to the dawn of Chinese civilization with documents and artifacts providing evidence of a well-developed musical culture as early as the Zhou Dynasty (1122 BCE - 256 BCE).