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Send reply to:  	ALLISON@CARDIFF.AC.UK
Date sent:      	Wed, 15 Sep 1999 08:11:03 GMT0BST

Cheryl,
You must know this!
I have always believed that mast cells may stain differently 
depending upon the species.  Is that right?

I also seem to remember that in some species (rats in particular) 
they change their staining characteristics during the oestrus cycle. 
 Is that right?

Russ Allison


Russ Allison, Wales