Friday, November 14, 2014

Immunity and Immune system

Adolescence: Problems and Causes of drug / alcohol abuse

Alcoholism- Effects and Treatment

Drugs- Types, action

TYPES OF DRUGS

Drugs are 4 types:



AIDS (Acquired Immuno Deficiency Syndrome)- Transmission, Diagnosis, Prevention

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: Types, causes, diagnosis and Treatment

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.