WHAT WOULD YOU DO: Jeff is an 11-year-old boy. He is hanging out with a group of friends and he hears someone use a derogatory racial slur directly towards a mutual friend that is not present.

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?