A distinguishing series of proteins that exist on the surface of every white blood cell to help the cell discriminate between

A term that refers to antibody production. The aspect of immunity that is mediated by secreted antibodies that are produced by B cells. Secreted antibodies bind to antigens, flagging them for destruction.

The study of diseased microscopic structure.

A birth defect in which some nerve cells are lacking in the large intestine, causing the intestine not to move stool and become blocked. It causes the abdomen to swell. See megacolon.

An operation that attaches the small intestine to an opening in the abdomen called a stoma. An ostomy pouch, attached to the stoma and worn outside the body, collects stool.

Refers to damage a medicine or other substance does to the liver.

The field of medicine focusing on the functions and disorders of the liver.

A virus that occurs mostly in people who share needles with infected people. Only people who have hepatitis B can get hepatitis D.

A virus spread by blood transfusion (prior to July 1992) and possibly by sexual intercourse or sharing needles with infected people. Hepatitis C can lead to cirrhosis and liver cancer. Hepatitis C used to be… 

A doctor who specializes in liver diseases.