Your 2 minutes would be better spent looking in an immunohistochemistry 
textbook. A small but excellent one is Polak, J.M. and Van Noorden, S. (1997). 
Introduction to Immunocytochemistry, 2nd ed. Royal Microscopical Society 
Microscopy Handbooks, 37. Oxford: BIOS Scientific Publications. 

You will find that there is an optimal technique of antigen retrieval for each 
antigen that has been critically studied. Some conditions (such as pH6, close 
to 100C for an hour) are OK for many antigens. Some require more alkaline 
solutions (eg pH9, more section losses!) and a few respond best to heating in a 
more acid (eg pH2) solution. With lower temperatures (eg 80C) longer times are 
generally needed. All sorts of chemicals have been included in antigen 
retrieval solutions, often without obvious reasons or explanations. There are 
published papers that compare retrieval conditions for antigens of importance 
in diagnostic pathology. Retrieval can sometimes be achieved without heating, 
as with proteolytic enzymes or 3M urea.

With a survey you may find out which antigen retrieval methods are used by most 
of those who reply, but you will not learn anything about how to choose and use 
the methods, or why their discovery about 25 years ago was an important 
technological advance. 

Check out this classic paper with Web of Science, Scopus, or Google Scholar: 
Shi, S.-R., Key, M.E. and Kalra, K.L. (1991). Antigen retrieval in 
formalin-fixed, paraffin-embedded tissue: an enhancement method for 
immunohistochemical staining based on microwave oven heating of tissue 
sections. Journal of Histochemistry and Cytochemistry 39:741-748. The PDF can 
be downloaded for free. This paper has been cited by thousands of other 
publications. The titles of recent citing articles may help you find a good 
retrieval procedure for the antigen that you need to detect 
immunohistochemically. 

John Kiernan
UWO, London, Canada
= = =
On 23/06/15, Craig  <volle...@gmail.com> wrote:
> Hi,
> 
> I am conducting a short 2 min survey for my science/business class
> examining current trends for antigen retrieval also known as heat induce
> epitope retrieval. Response will be greatly appreciated!
> 
> https://www.surveymonkey.com/s/7989LKR
> 
> Best,
> Craig Vollert
> Graduate Student
> Department of Pharmacological & Pharmaceutical Sciences
> SR2 521B
> College of Pharmacy
> University of Houston
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> 
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