Which three-letter medical abbreviation stands for something you won't find in the body?
a. dna
b. cns
c. rna
d. nrc

The is a thin membrane that transmits sound waves into the middle ear.

Dark clothing enables sweat to be evaporated on the skin's surface very quickly. loose light tight

Which of these technological advances has improved flu vaccines? a. ct scans b. cell-based culturing c. egg production d. glucose monitors