Which pair indicates the abdominopelvic region and the corresponding body organ that it houses? a. epigastric region; appendix b. right hypochondriac region; c. liver umbilical region; stomach d. left iliac region; urinary bladder

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?