Working as a lifeguard, you have responded to a collapsed teenager on the pool deck. The teen is unresponsive and does not appear to be breathing. You have a ventilation mask, but the emergency oxygen delivery system is on the far wall of the facility. What do you want to do

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?