Question

A person shows unwelcome immunogenic reactions while exposed to certain substances.(a) Name this condition.(b) What common term is given to the substances responsible for this condition?(c) Name the cells and the chemical substances released which causeClass XIIHuman health and disease

Answer 1

(a) ALEERGY.
(b) ALLERGENS
(c) Allergy is due to the release of chemicals like histamine and serotonin from the mast cells.