Homepage
KidzSearch
Play Fun Mobile Games.
Games
Cool Videos for Kids.
Videos
Talk About Anything
Q&A
Social Network for Kids
KidzNet
Explore Popular Images.
Pics
Explore the Best Sites for Kids.
Websites
Listen to Streaming Music for Kids.
Radio
Facts for Kids.
Facts
Read About Cool Topics.
News
Browse Over 200,000 Student Articles.
Wiki
Learn How to Search with Boolify.
Boolify
Discover KidzSearch Apps
Apps
Histamine is an organic nitrogenous compound involved in local immune responses. It also regulates physiological function in the gut, and acts as a neurotransmitter. Histamine is involved in the inflammatory response, where tissues get red, swollen and painful.
As part of an immune response to foreign pathogens, histamine is produced by basophils and by mast cells found in nearby connective tissues. Histamine increases the permeability of the capillaries to white blood cells and some proteins. The cells get through the walls of the tiny blood vessels to get at pathogens in the infected tissues.