See the movies

The following movies explore these themes are available for planetarium domes and for home DVD:

 Regenerative medicine can make healing happen faster, so that a broken bone heals in three weeks instead of six weeks. Inside all of us are young cells that make new bone. Doctors can remove a small number of these, take them to the lab to grow more of them, then put them back into the broken bone. The young cells grow new bone much more quickly than if the bone healed on its own.

Young cells pick up cues from their environment
while settling in bone tissue and become bone cells.