When we talk about stem cells, we are actually talking about a complicated series of things, including adult stem cells which are largely cells devoted to replacing individual tissues like blood elements or liver or even the brain.
“That in affairs of very considerable importance men should deal with one another with satisfaction of mind, and mutual confidence, they must receive competent assurances concerning the integrity, fidelity, and constancy each of other.”
“The most beautiful things in the world cannot be seen or even touched, they must be felt with the heart.”