300 Longwood Avenue Boston, MA 02115 (617) 355-6000 Research: Cardiomyocyte Undergoing Cell Division Adult cardiomyocyte (heart muscle cell) undergoing cell division. The cell membrane is pinched and the cell is about to separate into two new cells. The cell nuclei are shown in light blue, and the cleavage furrow -- the structure that pinches the outer cell membrane -- is shown in yellow. [Image courtesy Felix Engel, PhD; copyright 2004] To learn more, go to the press release... The information on this website should not be taken as medical advice, which can only be given to you by your personal health care professional. Copyright © Children's Hospital Boston. All rights reserved.