ninoo (25)in #photography • 7 years agojust amazingninoo (25)in #photography • 7 years agothe cat kingA cat of a friend from Algerianinoo (25)in #health • 7 years agowhat are Stem Cells ?Stem cells are a class of undifferentiated cells that are able to differentiate into specialized cell types. Commonly, stem cells come from two main sources: 1- Embryos formed…