Re: Q on scar tissue? Do unborn babies scar?

From: Malcolm (malcolm_at_55bank.freeserve.co.uk)
Date: 08/21/04 

Date: Sat, 21 Aug 2004 16:42:07 +0000 (UTC)

"sef" <st_ev_fe@hotmail.com> wrote
>
> If so, then what would be the point of an adult scarring if the body
> has the ability to heal properly?
>
Some animals can regenerate pefectly, even after losing whole limbs
(lizards, crabs), however the majority cannot. We don't really know the
reason why, but presumably it is so rare for an animal to lose a limb and
survive to reproduce again that there is not much selective pressure for it.
Scarring is an example of imperfect regeneration.