Talk:Theodor Schwann

message: Do you know of any other sites that give information about Theodor Schwann? — Preceding unsigned comment added by 24.27.179.64 (talk) 00:48, 18 December 2002 (UTC)
thread_title:  Talk 

message: I've thought it prudent to revert this change by 68.76.100.162. It's been there since 20 Nov!  - Samsara 18:57, 7 January 2006 (UTC)
thread_title: Any reason for this?

message: Please somebody correct the silly 2082 date in the text.  I abhor vandalism.  I would correct it myself, but I am afraid of messing up the article.  —Preceding unsigned comment added by 67.78.32.189 (talk) 21:08, 24 September 2007 (UTC)
thread_title:  Vandalism 

message: Certain parts of this article appear to be from old editions of the Encyclopedia Britannica, such as at this site.  Can the editors who added such information here also reference it?  I would, but I'm not particularly familiar with Schwann. - Astrochemist (talk) 20:42, 16 October 2008 (UTC)
replies: text: Belated update: I think the sourcing of Britanica has now been addressed by this edit.  Yaris678 (talk) 12:05, 28 August 2013 (UTC)
thread_title:  Source materials 

message: In case people can't be bothered reading all of the above, the summary is:
*An unregistered user made these edits.
*I identified a number of issues and and have resolved most of them.
*The remaining issues relate to the lines I have called 4.1 to 4.4.  These are as follows.
   	AText in Cell theory section ofversion edited by GorillaWarfare at 21:56, 27 November 2012                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      	BText in Cell theory section ofversion edited by Everyking at 00:53, 6 December 2013
4.1	In 1837, Matthias Jakob Schleiden viewed and stated that new plant cells formed from the nuclei of old plant cells. While dining that year with Schwann, the conversation turned on the nuclei of plant and animal cells.  Schwann remembered seeing similar structures in the cells of the notochord (as had been shown by Müller) and instantly realized the importance of connecting the two phenomena.  The resemblance was confirmed without delay by both observers, and the results soon appeared in Schwann's famous Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals, in which he declared that "All living things are composed of cells and cell products". Thus cell theory was definitely constituted.	In 1837,  Matthias Jakob Schleiden found that all plants are composed of cells, and communicated the finding to Schwann, who had found similar structures in the cells of the notochord, as shown earlier by Müller.  Other researchers confirmed the similarity, as explained in Schwann's Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals, where he concluded, "All living things are composed of cells and cell products".
4.2	In the course of his verification of cell theory, in which Schwann traversed the whole field of histology, he proved the cellular origin and development of the most highly differentiated tissues including nails, feathers, and tooth enamel.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 	This became cell theory or cell doctrine, compatible with Schwann's observations across all other tissues he investigated, concluding a cellular origin even of nails, feathers, and tooth enamel.
4.3	His generalization became the foundation of modern histology, and in the hands of Rudolf Virchow (whose cellular pathology was an inevitable deduction from Schwann) placed modern pathology on a truly scientific basis.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  	Schleiden's contribution extended cell doctrine to plants.  In 1857, pathologist Rudolf Virchow posed the maxim Omnis cellula e cellula—that every cell arises from another cell—widely accepted.  By the 1860s, cell doctrine became the conventional view of the elementary anatomical composition of plants and animals.
4.4	Schwann established a basic principle of embryology by observing that the ovum is a single cell that eventually develops into a complete organism.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              	no equivalent
Version B reads like it is written by someone with an understanding of where Schwann's work fits in the bigger picture, although I have to question the statement "Schleiden's contribution extended cell doctrine to plants", given it was Schleiden who first came up with the word cell to describe what he was seeing in plants before anyone thought about applying it elsewhere. This is the sort of thing that is difficult to check against sources but if anyone is familiar with this area or can think of a good way to check it I would be very interested to hear.  The story in A4.1 about him having dinner with Schleiden is mentioned in the 1911 Britannica Article so unless someone can prove Britannica wrong I would like to keep it in.  It's a nice human touch.
Anyone got any thoughts on this?
Yaris678 (talk) 21:22, 12 February 2014 (UTC)
replies: text: I have just brought back some of words from A4.1-4.4.  With that, I am basically happy that the big changes (from November 2012!) have been dealt with.  Of course, there is still two citation needed tags and a "clarify me".  But people can deal with those at their leisure without having to compare different 18-month-old versions of to each other.  Yaris678 (talk) 17:42, 2 April 2014 (UTC)
thread_title: TLDR

message: theodor schwan also discovers plant cells. Ddiggin2004 (talk) 16:05, 9 October 2018 (UTC)
replies: text: Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. Danski454 (talk) 16:30, 9 October 2018 (UTC)
thread_title:  Semi-protected edit request on 9 October 2018