FISH multicolour background

[Gahtani]

Hi...

I am dong multicolour FISH Exp. on lymphoma chrmosome metaphases ( 
patients and cell lines) using Teaxes Red and FITC ( direct and indirect 
tech,) but the problem which I am facing know is the background 
specially with FITC, larg and tiny green dots all over the slides

please, I need any help to cont. my work, S who has the magic answer.

looking to read your answer on my e-mail.

thanks

Qahtani