21 CFR § 1270.42
Human tissue offered for import
June 25, 2020
(a) When human tissue is offered for entry, the importer of record must notify the director of the district of the Food and Drug Administration having jurisdiction over the port of entry through which the tissue is imported or offered for import, or such officer of the district as the director may designate to act in his or her behalf in administering and enforcing this part.
(b) Human tissue offered for import must be quarantined until the human tissue is released by FDA.