Another Layer of Defense: The Adaptive Immune System - Discovery Institute

Discovery Institute

Another Layer of Defense: The Adaptive Immune System Discovery Institute These regions are called the secondary lymphoid tissue and consist of the lymph nodes, the spleen, the tonsils, and adenoids and the appendix. After they mature, lymphocytes migrate back and forth between the blood and the secondary lymphoid tissue ...

from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/1SHzIzX
via IFTTT