The Study was conducted by the Sloan Center on Aging & Work at Boston College between November 2007 and September 2008 (Time 1: November 2007 to March 2008; Time 2: May 2008 to September 2008). The Center collaborated with 9 U.S. workplaces (12 departments) on this study.
Heart muscle cells can take approximately 20 years to completely renew themselves. Never Cells that cannot repair â Itâs unfortunate for many, but old age can take itâs toll on the eyes and brain.
Specialized cells such as blood and muscle do not normally replicate themselves, which means that when they are seriously damaged by disease or injury, they cannot replace themselves. Stem cells can also divide and produce more specialized cell types.This process is called differentiation. Stem cells from different tissues, and from different stages of development, vary in the number and types of cells that they can produce.pecialized cells such as blood and muscle do not normally replicate themselves, which means that when they are seriously damaged by disease or injury, they cannot replace themselves. Stem cells can also divide and produce more specialized cell types.