The priming of naive T cells is mainly mediated by mature dendritic cells (DCs) in secondary lymphoid organs; however, now Sallusto and colleagues show that, after stimulation with mature DCs or ...

A eukaryote is any cell or organism that possesses a clearly defined nucleus. Eukaryotic cells form the foundation of complex, multicellular life, including apple trees, mushrooms, fish and humans.

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 ...

While prokaryotic cells do not have membrane-bound structures, they do have distinct cellular regions (Figure 1). In prokaryotic cells, DNA bundles together in a region called the nucleoid. Primitive ...