Loose, irregular connective tissue that lies between muscle cells, covering muscle fibers and holding them together.

A disease in which the lining of the esophagus becomes infiltrated with a type of white blood cell called an eosinophil.

The process of bacteria breaking down undigested food and releasing alcohols, acids, and gases.

Related to the stomach.

The functional and physical unit of heredity passed from parent to offspring. Genes are pieces of DNA, and most genes contain the information for making a specific protein.

A group of birth defects that changes the way the liver breaks down glycogen.

A vaccination that gives short-term protection against hepatitis B.

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.

A birth defect in which the anal canal fails to develop. The condition is treated with an operation.

Irritation of the colon caused by decreased blood flow. It may cause bloody diarrhea.