Crossword Clue:

the production or formation of bone

AnswerCrossword Clue
WORKINGCLASSEconomics 203: The Role of Labor in Production (or, as the students call it, the "...")
SKINSSextet of cancellations that produced the starred entries...or an oversexed MTV production now facing cancellation
PHALANGEBone of the hand or foot
PHALANGEA bone of the finger or toe.