Related Clues:

• Put a strain on
• Reason to cram
• Lab work
• See 19-Down
• Picture of health?
• See 56-Across
• Midterm, for one
• Use a cupel
• Hosp. diagnostic
• Dreaded class word
• Roentgen discovery
• Step in getting a license
• Final, perhaps
• Pro or con follower
• It makes the grade