Wikipedia describes Cellular memory as a hypothesis that memories can be stored outside the brain. However, unlike body memory, the cellular memory hypothesis states that these memories are stored in all the cells of human bodies, not in the bodies’ organs. The idea that non-brain tissues can have memories is also believed by some individuals who have received organ transplants, though this is also considered impossible. 
So, if you are like me, you believe in a lot of things that “science” says is not “considered” possible. I believe that we have things in our cells that have come from past lives. If you have never read “Many Lives Many Masters” by Brian Weiss, you are missing out!! Such a great book. My daughter told me that it changed her life!