Eliot Engel , American politician
said about May...
"Adult stem cells are also problematic, as they are difficult to identify, purify and grow, and simply may not exist for certain diseased tissues that need to be replaced."
- Eliot Engel Read all Eliot Engel quotes, or find out more about Eliot Engel
"Adult stem cells are also problematic, as they are difficult to identify, purify and grow, and simply may not exist for certain diseased tissues that need to be replaced."- Eliot Engel