Welcome to the Living World

TYPES OF DRUGS Drugs are 4 types:

AIDS  (Acquired Immuno Deficiency Syndrome) §   Syndrome means a group of symptoms. §   AIDS is the deficiency of immune system. §   Caused by  HIV   (Human Immunodeficiency Virus),  a  retrovirus  having RNA genome. §   AIDS was first reported in America (1981).

CANCER ·     Cancer is an abnormal and uncontrolled multiplication of cells resulting in the formation of tumor. ·     Normal cells show a contact inhibition (contact with the other cells inhibits their uncontrolled growth). Cancer cells appear to have lost this property. ·     Cancer cells form masses of cells called  tumors.