The immune system is continually surveilling the body—looking for pathogens, xenobiotics, and other non-self signals. The various cell types which constitute the immune system are, thus, incredibly ...

Programmed cell death such as apoptosis is a common stage of cellular life. Nanoclustering/Science Photo Library via Getty Images Living cells work better than dying cells, right? However, this is not ...

Lymphoproliferative disorders are a group of diseases that cause an uncontrolled production of lymphocytes, a type of white blood cell. Examples include non-Hodgkin’s lymphoma and certain leukemias.