Biochemstry
Biochemistry, sometimes called biological chemistry, is the study of chemical processes in living organisms, including, but not limited to, living matter. Biochemistry governs all living organisms and living processes. By controlling…
Defensins
Defensins are small microbial peptides that are classified on the basis of their size and pattern of disulfide bonding into alpha, beta and theta categories. They are produced constitutively or…
Telomere shortening
Telomere Shortening has been reported to be associated with aging. Telomeres consist of repetitive DNA (TTAGCC) in vertebrates at the ends of chromosomes which, together with specific binding proteins, act as protective cap…
MHC II molecules
See also MHC I molecules Structure: and Divsersity Class II MHC genes encode two different polypeptide chains, an ? chain and a ? chain which associate by noncovalent interactions. The peptide…
MHC I molecules
See also Class II MHC molecuels. MHC class I molecules bind cytosolically derived peptides within the endoplasmic reticulum (ER) and present them at the cell surface to cytotoxic T cells.…
Hypersensitivity reactions
Introduction/Definitions: Hypersensitive reactions are inflammatory reactions within the humoral (Types I-III) or cell-mediated branches of the immune system that lead to extensive tissue damage. Inflammation is a complex process, accompanied by the…
lymphoid organs
Introduction/Definitions: Lymphatic system: is a compartmentalized network of vessels, cells and specialized accessroy organs. It starts in the farthest reaches of the tissues as tiny capilaries that transports a special…
Superantigens
A superantigen is an antigen bound by antibodies found in the preimmune repertoire without the requirement of adaptive maturation of antibody variable domains. A bacterial toxin that is capable of…
Innate immunity
Whereas the adaptive immune system arose in evolution less than 500 million years ago and is confined to vertebrates, innate immune responses have been found among both vertebrates and invertebrates, as well…
Aging
See also Neurodegenerative Diseases Companies: Fountain Life Omegal Therapeutics: takes advantage of the organization of genes and regulatory elements into conserved 3D chromatin lopps. There are about 15k of these loops…