Make the periodic acid fresh that day.
Use 3 2 minute washes in 0.5% sodium meta-bisulfite instead of water.

Geoff

On 3/15/2011 10:16 AM, Martin, Erin wrote:
Hi all,

I'm having a problem with my PAS stain.  My pathologist says that glycogen and 
fungus stain beautifully but basement membranes are pale.  We are using 0.5% 
periodic acid for 10 minutes and schiff's for 25 minutes followed by 5 min 
rinse in warm/hot water.  Any thoughts?  Thank you in advance!

Thanks
Erin

Erin Martin, Histology Supervisor
UCSF Department of Dermatopathology
415-353-7248

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Geoff McAuliffe, Ph.D.
Neuroscience and Cell Biology
Robert Wood Johnson Medical School
675 Hoes Lane, Piscataway, NJ 08854
voice: (732)-235-4583
mcaul...@umdnj.edu
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