Anton von Leeuwenhoek helped advance medical understanding by introducing the ________ in 1674

Sweating, muscle tremors, tachycardia, and irritability are symptoms of which disease?

A) Addison's disease B) Hypothyroidism C) Hyperthyroidism D) Cushing's syndrome

All of the following are chemical agents EXCEPT:

a. nerve b. mustard gas c. phosgene d. tularemia