Jenny is 34 years old and has a bmi of 28. her body type could be described as pear-like. john is 55 years old with a bmi of 28, and a body type that is apple-like. why is john more likely than jenny to be at risk for degenerative diseases?

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?