Question

what cells release histamine during allergic responses?
neutrophils
basophils
eosinophils
monocytes

Explanation:

Basophils are a type of white - blood cell that release histamine during allergic responses. Histamine is a chemical that causes blood vessels to dilate and other allergic symptoms. Neutrophils are mainly involved in fighting bacterial infections. Eosinophils are important in combating parasitic infections and also play a role in allergic reactions but not the main histamine - releasing cells. Monocytes develop into macrophages and dendritic cells and are part of the immune system's defense against pathogens but do not release histamine in allergic responses.

Answer:

Basophils