The substances responsible for causing allergies are called.........

Select the incorrect statement $w.r.t.$ allergy.

Assertion: Histamine is related with allergic and inflammatory reactions.
Reason: Histamine is a vasodilator.

$A$ person shows strong unusual hypersensitive reactions when exposed to certain substances present in the air. Identify the condition. Name the cells responsible for such reactions. What precaution should be taken to avoid such reactions?

Which of the following secretions from mast cells induces an acute response in an allergy?

The use of anti-histamine,adrenaline,and steroids quickly reduces the symptoms of: