Dear Sir/Madam,
Do you ever prepared for 4% paraformaldehyde in PBS buffer?
In immunohistochemical staining procedure, I found when I dissolved 4%
paraformaldehyde in 0.1M PBS buffer, there will be lots of
unsoluable, white materials in bottom. I'm so confused whether it is
natural results or my procedure is wrong. Could anybody tell me how and
why it is, please? Thank you!
Sincerely
Andrew