Human Body Systems Immunology Blog March 2024

Only the nose can smell roses. Ever wondered what makes this happen? Past and recent research indicates this occurs through receptors

Ever wondered about the intricacies of allergy sensing? Learn more here on how this occurs in the human body with or without antibodies.

Innervation of the lymphoid organs is predominantly sympathetic. Parasympathetic innervation of lymphoid organs appears to be limited to the gut lymphoid tissue. The possibility that innervation regulates immune cell functionality by modulating blood supply of lymphoid organs requires further investigation with some as outlined below.

The body responds to various cardiac injuries via complex acute and chronic adaptive processes to maintain muscular pump function. Central to this process is inflammation and immune cell signalling. For example, in the setting of acute ischemic injury, immune-mediated activation of cardiac fibrosis is necessary to avoid catastrophic myocardial rupture. Activation of resident interstitial fibroblasts and recruitment of those derived from the epicardium result in scar formation that maintains chamber integrity.