Joann has a cold. she is coughing up mucus (a respiratory secretion) from her lungs. joann is the in the chain of transmission. the mucus from her cough is the in the chain of transmission. nextreset

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?