[Histonet] RE: Vibratome sectioning of mouse spinal cord

2010-11-12 Thread Mejia, Maria
Hello Susan, Before I can help, I need more information from you. Are your samples fixed or unfixed? In any case, make sure that the vibratome is in working order & that all the movable parts are tight before you section on the vibratome. In addition, during cutting the holding tray should ha

RE: [Histonet] Re: Cryoprotection

2010-08-24 Thread Mejia, Maria
Can you be more specific & tell us what DW means & please give us the protocol for the sucrose including the amount of DW used. This way we can help you. Regards Maria Mejia Histology Supervisor Department of Neurosurgery UCSF San Francisco, CA From: his

RE: [Histonet] air dry or heat dry

2010-07-12 Thread Mejia, Maria
Hello Jeff, Let's see you are sectioning your (fixed) rat brain on the cryostat at 10ums. I'm assuming they are mounted on standard size superfrost plus slides & since they are fixed sections & even if they were not fixed - after sectioning why not air-dry these sections standing up under a f

[Histonet] RE: Antigen retrieval question

2009-10-20 Thread Mejia, Maria
Brett, We mostly work & do IHC on 40um free-floating brain sections. These sections were cut from fixed brain blocks. Sometimes, not on a regular basis, but sometimes we have had to place our sections in (plain) PBS solution & stored at 4C - overnight before continuing the IHC protocol with no

RE: [Histonet] antifreeze

2009-08-03 Thread Mejia, Maria
Hello, Here in our lab we section lots of rat & primate (large blocks) of frozen brain tissues. We cut them at 40um as free-floating sections & place each section in wells - using the 24 plate well. The wells have 2ml each of anti-freeze solution which is stored at 4C or -20C for IHC methods.

RE: [Histonet] stickest slides for brain sections or how to coat aproper slide for urself

2008-12-16 Thread Mejia, Maria
This is for anyone's interest who work with 40um primate brain section 2x3 inches. We routinely mount our IHC stained sections from working PBS on pre-subbed brain slides from Brain Research Labs. To keep the sections on the slides we use a very fine (#0) brush to brush the section flat on th