Question

what is heparin, histamine and serotonin?

Answer 1

Histamine acts during inflammatory response. It is also an important neurotransmitter and involved in several physiological processes.
Heparin is an anticoagulant and prevents the blood from clotting.
Serotonin is also a compound secreted by basophils and has physiological functions like increasing vascular permeability, dilating capillaries etc.

Answer 2

Answer:

Basophils are a type of white blood cell. ... They also produce compounds that co-ordinate immune responses, including histamine and serotonin that induce inflammation, heparin that prevents blood clotting, although there are less than that found in mast cell granules.

Explanation: