Which of the following usually cannot act as an allergen?(a) Pure Water(b) Pollen(c) Dust(d) ShellfishThis question was posed to me in unit test.Question is taken from Human Health and Disease topic in division Human Health and Disease of Biology – Class 12

Which of the following usually cannot act as an allergen?(a) Pure Wate

1.	Which of the following usually cannot act as an allergen?(a) Pure Water(b) Pollen(c) Dust(d) ShellfishThis question was posed to me in unit test.Question is taken from Human Health and Disease topic in division Human Health and Disease of Biology – Class 12
Answer» Right choice is (a) Pure Water For EXPLANATION: Pure water USUALLY cannot ACT an allergen to an individual because it is free of IMPURITIES. Allergen is any foreign substance or agent that produces hypersensitivity in an individual. For example, pollen, spores, dust, scent, wool, drugs like penicillin, egg white, fur, feathers, shellfish, ETC.

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