â¢ Humoral immunity is mediated by B-cells while cell-mediated immunity is mediated by T-cells. â¢ In the humoral immunity, the B-cells secrete antibodies whereas in the cell-mediated immunity, the T-cells do not secrete receptors. T-cell receptors are bound to the T-cells and the cells themselves bind with antigens.
The M.P.D. as it appears in-game. The M.P.D. is a pyramid-shaped Vril machine, with a circular indented interface at the front that, when the Vril Generator is applied, grants the power to control the Aether's energy. When powered by souIs, it is able to open a direct portal to the Aether, which drove Richtofen insane and give him Schizophrenia.
Not to be confused with Metro Transit Police Department or United States Capitol Police. The Metropolitan Police Department (MPD), officially the Metropolitan Police Department of the District of Columbia, is the law enforcement agency for the city of Washington, D.C.