Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 3 years ago

The sneezing, runny nose, and itchy eyes associated with allergies are caused when A. smooth muscles reduce the size of air passageways in the lungs. B. the immune system attacks the body’s own cells. C. mast cells release histamines. D. infected cells produce interferon.

  • This Question is Closed
  1. Miss_Deva
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    C. mast cells release histamines.

  2. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy