Rinse with water and dry air. Cell Wall Construction Gram positive and gram negative bacteria stain differently because of the structure of their cell walls. Gram - positive bacteria and yeasts stain purple. Gram negative bacteria and host cells stain pink. Microscopy Proper adjustment of the microscope is essential.
Slide shows neutrophils and gram positive cocci.
Find the Gram positive and Gram negative rods in this field. Crystal violet precipitate crystal on gram stain. Reporting Results Use systematic, descriptive terminology to report gram stain results. Occasional yeast is normal. No yeast seen.