The term  cancer  encompasses more than 100 diseases affecting nearly every part of the body, and all are potentially life-threatening. The major types of cancer are carcinoma, sarcoma, melanoma, lymphoma, and leukemia. Carcinomas -- the most commonly diagnosed cancers -- originate in the skin, lungs, breasts, pancreas, and other organs and glands. Lymphomas are cancers of lymphocytes. Leukemia is cancer of the blood. It does not usually form solid tumors. Sarcomas arise in bone, muscle, fat, or cartilage and are relatively uncommon. Melanomas are cancers that arise in the cells that make the pigment in skin.
Since the founding of the People's Republic of China in 1949, China has entered a new Communist era of stability, with the Reform and Opening Up policies of 1978, bringing in Chinaâs phenomenal economic growth.
China gained it's first real national identity under the first of the Chin dynasty, thus the name China. This was around 200 AD. This marked the unification of the 3 kingdoms into a single kingdom that is roughly 2/3rds what is now China today. The Qin dynasty is considered by many to be the beginning of China also. This happened around 200 bc, 400 years before the first Chin ruler. Many of the charatoristics that would become Chinese culture came from this dynasty.