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- Path: sparky!uunet!spool.mu.edu!yale.edu!newsserver.jvnc.net!netnews.upenn.edu!pender.ee.upenn.edu!rowe
- From: rowe@pender.ee.upenn.edu (Mickey Rowe)
- Newsgroups: sci.bio
- Subject: The size of a cell (was Re: MRNA)
- Message-ID: <106033@netnews.upenn.edu>
- Date: 21 Jan 93 20:28:28 GMT
- References: <104941@netnews.upenn.edu> <1759@tdat.teradata.COM> <C17E3y.GCE@world.std.com>
- Sender: news@netnews.upenn.edu
- Organization: University of Pennsylvania
- Lines: 35
- Nntp-Posting-Host: pender.ee.upenn.edu
-
- In article <C17E3y.GCE@world.std.com> eb3@world.std.com
- (Edwin Barkdoll) writes:
-
- >In article <1759@tdat.teradata.COM> swf@tools3teradata.com
- (Stan Friesen) writes:
-
- >>Now, since neurons are amoung the largest cells in the body,
- >
- > Neurons are also among the _smallest_ cells in the in the body
- >-- granule cells of the cerebellum.
-
- Thanks, Edwin. That was actually the point of my objection to Ken's
- statement. I was protesting the idea that neurons are generally
- larger (volumetrically) than other types of cells. Your points about
- DNA content not being the same in all cells is also well taken, but
- that wasn't what I was on about at the time...
-
- >Granule cells have been estimated
- >to number ~10^11 which I think Mickey pointed out is about that
- >estimated in the rest of the brain.
-
- Well, actually what you're probably remembering is my quote of Larry
- Palmer, "it's been estimated that there are 10^12 neurons in the human
- nervous system, 10^13 of which are in the cerebellum". Or perhaps
- you're remembering Ken's posting of the 10^11 estimate that made me
- post the joke in the first place.
-
- >>except for certain muscle fibers and (as mentioned above) eggs, they must
- >>clearly have less DNA per unit weight than other cells.
-
- Come on, Stan, you should know me better than that by now...
-
- >Edwin Barkdoll
-
- Mickey Rowe (rowe@pender.ee.upenn.edu)
-