A chemical produced by a microorganism that can be harmful is known as a(n):
A. biologic
B. toxin
C. immunogen
D. antibiotic
b
Rationale: One way to attenuate a virus is through laboratory manipulation, in which a bacterium is developed that lacks a toxin (a chemical produced by a microorganism that can be harmful), enzyme, or some other normal constituent that causes symptoms of disease.
Health Professions
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A) 90 / lightweight B) 70 / lightweight C) 80 / wood frame D) 60 / wood frame
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