Stuck on a problem? Get great tutoring at an affordable price with Chegg. Click here to join and get your 1st 30 minutes Free!

Opsonin

From Biology-Online Dictionary
Jump to: navigation, search

Definition

noun, plural: opsonins

Any substance (e.g. antibody) that binds to the surface of a particle (e.g. antigen) to enhance the uptake of the particle by a phagocyte (e.g. macrophage)


Supplement

Opsonins are essential in immunological protection of the host against pathogenic bacteria. Opsonins in the surface of the antigen serve as "flags" to indicate that the antigen need to be destroyed by the action of the immune system.


Related term(s):