Not first hand, and the data I'm aware of are not "authentic" data
but changes in 13C abundance depending on feed and/or disease
status.

The person to ask would be Prof Giese at the Veterinary University
Hannover (Germany). His e-mail address is:

 <[log in to unmask] >


> Does anyone out there know data for C and/or N isotopes in cow's (or
> other) milk?
>
> Henry Schwarcz
>

Hope this proves to be useful.


Best regards,

                        Wolfram



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Dr. W. Meier-Augenstein, CChem MRSC
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University of Dundee, School of Life Sciences,
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URL1: http://www.dundee.ac.uk/biocentre/SLSBDIV6wma.htm
URL2: http://www.dundee.ac.uk/anatphys/wma/meieraug.htm
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