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
   
Eliot Engel   Name:
Eliot Engel
Type:
Politician
Nationality:
American
Birth:
February 18, 1947
https://www.nutquote.com/quote/Eliot_Engel