The best thing to do when you home alone

The heart and lung are located in which cavity ? thoracic

Can you get chlamydia from sleeping in the same bed

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?