RE: [Histonet] post-fixation question

2010-09-23 Thread Tony Henwood
NSW 2145, AUSTRALIA -Original Message- From: histonet-boun...@lists.utsouthwestern.edu [mailto:histonet-boun...@lists.utsouthwestern.edu] On Behalf Of Geoff McAuliffe Sent: Thursday, 23 September 2010 11:59 PM To: Salim Yalcin Inan Cc: Histonet Subject: Re: [Histonet] post-fixation question

RE: [Histonet] post-fixation question

2010-09-23 Thread Anatoli Gleiberman
Hi Inan, 2h post-fixation for immunohistochemistry on mouse brain is usually more than enough. We use 1h post-fixation at room temp for mouse brain following storage (sometimes, for many weeks) at +4 C in PBS before sucrose cryo-protection, embedding and sectioning. Anatoli Gleiberman, PhD Directo

Re: [Histonet] post-fixation question

2010-09-23 Thread Geoff McAuliffe
Merced is correct about longer fixation inducing more cross-linking, possibly making immunostaining more difficult. Much depends on the antigen you are looking for. I disagree that the tissue will become brittle, this is not my experience. Geoff Salim Yalcin Inan wrote: Hello, I have a q

Re: [Histonet] post-fixation question

2010-09-23 Thread Merced M Leiker
The longer the tissue sits in paraformaldehyde the more the proteins in the tissues will become cross-linked due to multiple methylene bridge formations and could require very rigorous antigen retrieval or may even be beyond retrieval; the tissues could become brittle as well due to over-fixati