Which chemical causes the signs of an allergic response when it is released in response to allergens?
A) heparin
B) histamine
C) collagen
D) keratin

Question

Which chemical causes the signs of an allergic response when it is released in response to allergens?​
A) ​heparin
B) ​histamine
C) ​collagen
D) ​keratin

Quizplus · Accepted Answer

Histamine is the chemical that is released in response to allergens and is responsible for the signs of an allergic response such as itching, swelling, and inflammation. Heparin is an anticoagulant, collagen is a protein found in connective tissue, and keratin is a protein found in skin, hair, and nails and is not related to the allergic response.

Which Chemical Causes the Signs of an Allergic Response When