[Histonet] Commonly used stains for kidney disease progession??

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Hi everyone,
 
Quick question:
 
What are the commonly used stains/immunochemistry procedures to evaluate progression of disease within kidneys?  (I may need to know WHY also in case I am not familiar with a certain technique, stain, or antibody)
 
So far I have been told a number ranging from PAS, trichrome and a silver technique - but I started to become confused.  They all seem great but I think I may need the WHY along with the WHAT when answers are being sent back in reply.
 
As usual, thank you for your assistance.
 
G.T. Hebert 
Cambridge Massachusetts
 
 

		
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