CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER A—GENERAL (parts 1 to 99) > PART 12—FORMAL EVIDENTIARY PUBLIC HEARING > SUBPART E—Hearing Procedures (§12.80 to §12.99) > 12.83—Advisory opinions.