Many people suffer from which system-related problem due to pollen grains of many species?

  • A
    Digestive system
  • B
    Excretory system
  • C
    Nervous system
  • D
    Respiratory system

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Which of the following is helpful in reducing the symptoms of allergy quickly?

Hypersensitivity to an allergen is due to

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

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

Which chemicals are responsible for allergies?

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