There are many different types of pulmonary function tests that may be used to provide valuable information about the lungs, as well as detect the presence of and/or monitor certain respiratory ...

T cells, also known as T lymphocytes, are the immune cells that drive the cellular immune response. There are several different types of T cells, each playing a distinct role. The functions of T cells ...

Sleep generally falls into two categories: Rapid-eye movement (REM) and non-REM sleep. Not surprisingly, both types help the body restore itself. More surprising, though, is how little we truly ...