Serotonin released from mast cells is responsible for.........

Which chemicals are used to quickly reduce the symptoms of allergy?
$I -$ Serotonin,$II -$ Adrenaline,$III -$ Steroids,$IV -$ Antihistamines,$V -$ Histamine

When a person dies after being stung by a bee followed by the administration of penicillin,the death may be due to:

Which type of antibody is produced in response to allergens?

Assertion: Many visitors to the hills suffer from skin and respiratory allergy problems.
Reason: Conifer trees produce a large quantity of wind-borne pollen grains.

Assertion : Mast cells in the human body release excessive amounts of inflammatory chemicals,which cause allergic reactions.
Reason : Allergens in the environment on reaching human body stimulate mast cells in certain individuals.