I am looking to apply to a CRNA program in the next year or so. I have “A’s” in all of my prerequisite classes except for chemistry (B+) and microbiology (B). Statististics, A&P, etc…were all A’s or A+. Would it be well worth my time to go back and retake chemistry and micro? Do these two B’s have the potential to prevent me from getting into a CRNA program?