*2.1.3 Fixation and coloring*

We proceed to fix the material taken on the slide, then we apply the May-Grunwald-Giemsa (MGG) coloration. In our experience, we have been using a fastacting MGG staining method (MGG Quick Stain®) for some years now. Cytological staining method is very numerous and each of them has its own specificity and application. In nasal cytology the most widely used is the MGG method which is able to easily differentiate the various cells found in the nasal mucosa.
