How do serious types of coronavirus damage you? A: Nothing.

B: They damage your lungs and give you joint pain!

C: They cause Pneumonia!

D: They are flu, so no damage.

Note: You can choose more than one answer.

Investigator a has biological specimens that are coded and linked to identifiers of the source individuals. investigator a provides the specimens to investigator b but does not provide the individual identifiers. investigator b agrees not to re-identify the source individuals. is investigator b's research using the biospecimens human subjects research according to the definition of human subjects research in the federal regulations?