Sources main content.


Scientific Paper


  • Stem cell photo and heart cell video (University of Wisconsin-Madison)
  • Red blood cells (UW-Madison University Communications 608/262-0067)
  • Nerve cells (Courtesy Ronald Kalil)
  • Stem cell diagrams (AMNH)

This Human Bulletin was made possible by Science Education Partnership Award (SEPA) grant #1 R25 RR025057-01 from the National Center for Research Resources (NCRR), a component of the National Institutes of Health (NIH).