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.
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Nationality: American Type: Politician Born: February 18, 1947 |
“There is nothing real about film. Nothing. Even the light particles that project the film can't be proven to exist. Nothing is there.”
“Be advised that all flatterers live at the expense of those who listen to them.”