我也来搭个车来说说自己关于不同条件的fix下的对于IHC的影响。 我是做眼睛的, 我做过如下的比较, 1. Whole globe: O/N fix in 4% PFA 2. Whole globe: 1hour RT in 4% PFA 3. Slit the cornea (more access to PFA) : O/N in 4% PFA 4. Slit the cornea: 1hour RT in 4% PFA I compared immunogenicity of CD31 and PDGFRb. Results were: 1>=4>2=3 As for the brain, I usually perfuse and fix with 4% PFA and post-fix in 4% PFA O/N. Today I didn't perfuse, I guess I may just leave the brains in 4% PFA for 36hours.
【在 n***w 的大作中提到】 : Does your institute have histology core? : If so, they should be able to train you.
h*o
17 楼
For whole brain or hemisphere, what I did is to overnight fix them at 4oC. Change to PBS with sodium azide for storage afterwards. Make sure that your brain samples were perfused well. Residue serum/blood is usually the cause of high background. Also, block for longer time may help too. Last take a 3D stack then get sharper images through deconvolution.