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> The books say central nervous system tissue doesn’t regenerate in adults, That was the belief until some 15-20 years ago when they realized neurones can regenerate. I remember being taught that we were born with a definite number of neurones that diminished with age. Now, we know better and we know new circuits can appear and new neurones too maryse ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn