Nearly 40 percent of the small adrenal tumors that cause big problems with high blood pressure share a genetic mutation that causes patients to retain too much sodium, researchers report.

A new study finds that fetal exposure to the plastic additive bisphenol A, or BPA, alters mammary gland development in primates.

The thymus plays a key role in the body's immune response.

Columbia University Medical Center (CUMC) scientists have developed a way to recreate an individual's immune system in a mouse.

A new study provides evidence that a critical type of immune cell can develop in human tonsils.