strictly speaking, pretty few if any cells in your body are still the originals you were born with. there are a couple of things i couldn't understand about the beaming. a number of episodes mentions that all sorts of germs can be sorted out, so how comes that constantly sick folks with alien diseases arrive in sickbay? why does the transporter not fix injuries, or resurrects the dead? there was an episode of ds9 were some crewmembers got buffered in the computer system and the holodeck of the station, and could be brought back. so, why is not the data of any person beamed backuped?