3 ms·

Don't forget about adult stem cells, too. Those do count.

• Groxx 16y ago
  I didn't include those specifically because they're much harder to find: >Pluripotent adult stem cells are rare and generally small in number but can be found in a number of tissues including umbilical cord blood. Though I'm not sure if that has changed. I've generally gotten the impression that, while they can literally be found in every tissue, they're much harder to actually find, separate, and stimulate in usable quantities than the ones I listed. Umbilical cord blood is probably worth including though, yes, I think I've heard that's fairly high density. Though that's not what I'd consider to be "adult"; nearly anything to do with growing babies has stem cells.
  • checoivan 16y ago
    You've got it right. Not all stem cells are equal,there's CD33+,CD34+,etc. They can be found in many places but the amount of cells matter. Umbilical coord blood is awesome cause it's full of cd34+, but even then, even the amount of a really good collection won't support a full adult transplant cause the techology to grow and multiple the sample isn't there yet. ~2 years ago the top notch tech would only double the amount of a really good sample ,which would be about 2 ml.