Foundations in Microbiology 9th Edition by Kathleen Park Talaro, Barry Chess

Exercise 4

Critical thinking is the ability to reason and solve problems using facts and concepts. These questions can be approached from a number of angles, and in most cases, they do not have a single correct answer.
a. Where in the course of type I allergies do antihistamine drugs, cortisone, and desensitization work? Exactly what do they do?
b. Compare the sites of action of montelukast (Singulair) and omalizumab (Xolair).