Dear All,

They mystery has been solved, thanks to:

Anelia Boshnakova, Royal London Homoeopathic Hospital
Hannah Prince, The Princess Alexandra Hospital NHS Trust
Anita A.H. Verhoeven, University Library,  Groningen
Keith Nockels, University of Leicester
Kathleen Irvine, Highland Health Sciences Library
Amy Faulkner, Toronto General Hospital

The answer is that DM appears at two points in the MeSH tree: Nutritional & Metabolic Diseases and Endocrine System Diseases.  I was only looking at the former, while under the latter are more, different subject headings.  The total number of records between the two sections is rather more than the 86000 I was looking for as some come under more than one heading.

As Amy says, 'The trick is to click on the orange contexts button on top left corner of the screen under where it says Tree for Diabetes Mellitus.'  This brings up a display of all occurences of the search term in the MeSH tree - and the 'Contexts' button changes to 'full tree'.

Now the admission: if you read the 'Hints' section below the tree display, the second hint says, 'The tree displays the search term in the first context where it appears in the full subject tree. Use the Contexts button to display all instances of where your term appears in a subject tree.'

Well done all those people who read the instructions!

Thanks for your help,

Paul



Paul Manson
Liaison/Clinical Librarian
NHS Grampian
Room 1:091
Medical Library
Polwarth Building
Foresterhill
Aberdeen
AB25 2ZD

[log in to unmask]
Internal: ext 59433
External: 01224 559433

***************************************************************************
This e-mail is confidential and privileged. If you are not the intended
recipient please accept our apologies; please do not disclose, copy or
distribute information in this e-mail or take any action in reliance on its
contents: to do so is strictly prohibited and may be unlawful. Please
inform us that this message has gone astray before deleting it. Thank you
for your co-operation.
***************************************************************************