Dantígens

Dantígens is not a widely recognized term in established scientific literature. In many contexts it appears to be a misspelling or regional variant of antígenos (antigens) in Spanish, or a coined term used in a specific, nonstandard context. As a result, there is no accepted, formal definition of dantígens in immunology. When encountered, it is usually advisable to refer to antigens unless the author provides a distinct glossary.

Antigens are substances that can elicit an immune response. They are typically molecules or parts of molecules that the immune system recognizes as foreign. The portion of the antigen that is recognized by antibodies or T cell receptors is called an epitope. Antigens can be proteins, polysaccharides, lipids, or nucleic acids, and their immunogenicity depends on factors such as size, complexity, foreignness, and the ability to be processed and presented to immune cells.

Antigen recognition involves both humoral and cellular branches of the adaptive immune system. Antibodies bind specific epitopes on antigens, while T cells recognize peptide fragments presented by major histocompatibility complex (MHC) molecules. Antigen exposure can be exogenous (from outside the body) or endogenous (generated within the body), and antigens can be self or non-self. Haptens are small molecules that become antigenic when attached to a larger carrier.

In practical terms, antigens are central to vaccines, diagnostic tests, and understanding autoimmune diseases and allergies. If dantígens appears in a text, it may be a typographical error for antígenos or a term defined by that particular author. When in doubt, consult the source's glossary or replace with the standard term antigen.