What it is. High fructose corn syrup is a sweetener made from corn. It's sweeter and cheaper than sucrose, which is the form of sugar made from sugar cane. Foods that have it. High fructose corn syrup is a common additive in many kinds of processed foods, not just sweets.
Immune responses to antigens may be categorised as primary or secondary responses. The primary immune response of the body to antigen occurs on the first occasion it is encountered. Depending on the nature of the antigen and the site of entry this response can take up to 14 days to resolve and leads to the generation of memory cells with a high specificity for the inducing antigen.
Activation of the B-Cell receptor by antigen also results in the production of memory cells that persist in circulation to produce a more rapid immune response after future challenges by the same antigen. The bound antigen molecules are engulfed into the B-Cell by receptor-mediated endocytosis.-Cells are not only produced in the bone marrow but they also mature there. Each B-Cell is specific for a particular antigen. The specificity of binding resides in the BCR (B-Cell receptor) for antigen.