I seem to remember that neural cells are different - they are not replaced, but we are born with the same cells we have till we die - can anybody back me up? Hilary Blue (BSc Zoology, 1969) ____________________________________________________________________________________________________ Hawkins, Darwin wrote: > > In a recent post, Wendy Tebey wrote in part: > > "I've also read before that during the course of a year, just due to > natural cell death and generation, we actually end up with a completely > new body, at least once over, in that time." > > I believe the correct time interval for complete cell replacement in our > bodies is about 7 years. If it were as quick a one year, then there > would probably be an easy treatment for some cancers (either that or > more people would die very quickly from them or there would be a lot > more people with cancer since it is the improper coding of the > replacement cells that results in cancer). > > Darwin (the ninth one! - - - 60 divided by 7)