Colorized scanning electron micrographs of a B and T lymphocyte shown with a fluorescent microscopy image of the previously unseen "X lymphocyte," which is a hybrid of the other two immune cells.

The main populations of lymphocytes are B cells, T cells and natural killer (NK) cells. They are typically (although not exclusively) associated with adaptive immune responses. Populations of ...

Instead of the V(D)JC composition of immunoglobulin-based B cell receptors (BCRs) and T cell receptors (TCRs) in jawed vertebrates, the variable lymphocyte receptors (VLRs) of jawless vertebrates ...

There are two main types of lymphocytes: B-lymphocytes and T-lymphocytes. Of these, there are two types of T-cells doctors monitor during the course of an HIV infection: CD4 T-cells are T ...