If all women have them, why are they rare?
I know I’m being picayune here, but I found this paragraph funny:
For 60 years, doctors have believed women were born with all the eggs they’ll ever have. Now Harvard scientists are challenging that dogma, saying they’ve discovered the ovaries of young women harbor very rare stem cells capable of producing new eggs.
I’ll repeat the question in my post caption: if all young women have these stem cells capable of producing new eggs, why are the stem cells rare? They might be small in number per woman, or they might have a finite life span in any given woman, but that doesn’t make them rare, does it? Wouldn’t they be rare only if a very small number of women out of the overall population had them?
