CD4+ T cells, or helper T cells, are one type of lymphocyte that helps coordinate the immune response against infection and disease. They interact and activate other cells in the immune system. The ...

An essential component of the lymphatic system, the thymus, a pyramid-shaped organ located in the thoracic cavity, is responsible for producing T-cells. For centuries, the thymus was believed to be an ...

CHAMPAIGN, Ill. — Researchers report that they are the first to show in molecular detail how one gene evolved two competing functions that eventually split up – via gene duplication – to pursue their ...

Prostaglandins are hormone-like substances. Different tissues in the body can release prostaglandins, including the skin, stomach, and lungs. Having an appropriate amount of this substance is ...

The energy for various functions of the human body comes from the nutrient molecules that have been broken down, in a process called metabolism. Metabolism comprises of two major parts: anabolism ...