Which of the following is always a component of allergies?
Out of all the answers shown above the one that best represents the one that is always a component of allergies is answer choice A) histamine.
I hope it helps, Regards.
Answer: The innermost layer of the small intestine is made up of epithelial cells and contains four layers; mucosa, submucosa, muscle layer, and adventitia.
dont click on alot of them, they are unsecure and dont work
