Stem Cells are one of the drug items in the game.
About
Stem cells are produced from bone marrow or fat samples, and can be injected in the site of an injury to cause rapid healing.
Crafting
Users in the Pharmaceutical Sciences stream can craft stem cells at the Workshop. It takes approximately 24 hours (or 12 show rollovers) to craft.
Use
Stem Cells are used to craft Recharge.