It appears to be a highly contracted artery or
arteriole with artifactual damage to the surrounding
tissue.  The smooth muscle cells also appear to have
vacuoles or fixation- or mechanical-related artifacts.
 The angle of cut through the vessel seems
tangential--giving the interesting image.

Roger Moretz, Ph.D.
Dept of Toxicology
Boehringer Ingelheim Pharmaceuticals Inc
Ridgefield, CT

--- "Martin S."  wrote:

> I have an image of an H&E stained structure that I
> want to submit to a
> micrograph competition (it is to be judged on
> artistic rather than
> scientific merit!). Does anyone know what it might
> be?
>  
> It was in an FFPE mouse kidney section - but not
> within the kidney
> tissue.
>  
> Is it a stucture or an artifact?
>  
> Please go to www.flickr.com/photos/sonzer to see it.
>  
>  
> Sonya ;-)
> 
> 
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>
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> 


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