Sabash, What I think you may be referring to is the use of a surfactant in the antigen retrieval solution to lower the surface tension. The theory being it reduces bubble formation in the retrieval solution at high temperature and hence disruption of tissue. Before moving to commercial antigen retrieval solutions we would add Tween 20 to a concentration of 0.05% to our in house citrate or EDTA retrieval solutions to achieve this effect.
Regards, Mark Original message: Date: Wed, 16 Oct 2019 13:43:28 -0400 From: Maria Cruz <mcruz8...@gmail.com<mailto:mcruz8...@gmail.com>> To: "histonet@lists.utsouthwestern.edu<mailto:histonet@lists.utsouthwestern.edu>" <histonet@lists.utsouthwestern.edu<mailto:histonet@lists.utsouthwestern.edu>> Subject: Re: [Histonet] How to prevent bubbling in pressure cooker for immunohistochemistry procedure Message-ID: <capg7ww1f0dsbw85m8wnrz2pamxpgkqpxw0v9kx-svxmwbv1...@mail.gmail.com<mailto:capg7ww1f0dsbw85m8wnrz2pamxpgkqpxw0v9kx-svxmwbv1...@mail.gmail.com>> Content-Type: text/plain; charset="UTF-8" Subash: Since the main purpose of using a pressure cooker for HIER is the rapid and reliable pre-treatment of sections while PREVENTING boiling and potential tissue detachment, you really shouldn?t be experiencing any bubbling. If you are, then your PC isn?t sealed adequately and the only way to fix that problem is to replace the gasket or find another way to tighten the lid.. I?ve never heard of anything that you can put inside of a PC that can change the way it pressurizes, so I?ll be following this thread to see if anyone else can contribute. Maria ************************************** Hi there all Can anybody please tell me if they have heard of or perhaps know of a substance that can be placed in the pressure cooker during the antigen retrieval process for immunohistochemistry. This prevents excessive bubbling and lifting up of sections. I did somehow come across such info a while back, but seem to have lost it. Many thanks. Best Regards Subash Govender _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet
