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A biopsy is a sample of tissue collected from an organ or other part of the body. A biopsy can be done by cutting or scraping a

The bladder is a balloon-shaped muscle that serves as the storage pouch for urine. Urine flows from the bladder through the

Human blood is typed according to whether certain markers, called antigens, are present on the surface of red blood cells. The ABO

Blood pressure is the force of blood inside an artery. A blood pressure reading measures the force of blood against the walls of

A blood culture is a test on a sample of blood to check for bacteria, a fungus, or sometimes viruses in the bloodstream. The test

A blood clot (a clump of blood) that forms in a vein and causes inflammation is called thrombophlebitis. Symptoms include pain

Bladder infection (cystitis) is the most common infection of the lower urinary tract. Bladder infection is usually caused by

Blood in the stool can come from anywhere in the digestive tract, such as the stomach or intestines. Depending on where the blood

Benign prostatic hyperplasia (BPH) is an enlarged prostate gland. It happens to almost all men as they age. The prostate gland

Botulinum toxin is a protein produced by a certain type of bacteria ( Clostridium botulinum ). It is the same toxin that can cause