December 7, 2017 Comments Off on Why Are Coral Reefs So Fragile Why Are Coral Reefs Overexploited December 7, 2017 Comments Off on Why Are Coral Reefs Overexploited
Automatic gain control (AGC), also called automatic voltage gain, is a closed-loop feedback regulating circuit, the purpose of which is to provide a controlled signal amplitude at its output, despite variation of the amplitude in the input signal.
In immunology, an antigen (Ag) is any structural substance that serves as a target for the receptors of an adaptive immune response, TCR or BCR or its secreted form antibody.he term originally described a structural molecule that binds specifically to an antibody. It expanded to refer to any molecule or a linear molecular fragment that can be recognized by highly variable antigen receptors (B-cell receptor or T-cell receptor) of the adaptive immune system.