title: Reevaluation of optimal Feulgen reaction for automated cytology. Influence of fixatives.
abstract: The Feulgen reaction is used for cytophotometric quantification of nuclear DNA and texture studies of chromatin structure. It appears that fixative agents are responsible for the microscopic appearance of chromatin. In this investigation, different fixative agents mixed in various proportions were tested for their performance in automated quantitative cytology. It was determined that three factors have to be considered in the choice of a fixative: stain intensity, nuclear area and chromatin texture. In this respect, the Regaud fixative appears to be the best for automatic analysis of Feulgen-stained nuclei.
authors.affiliation: Image Processing and Quantitative Microscopy Laboratory, Joseph Fourier University, Grenoble, France.
authors.forename: F
authors.initials: F
authors.lastname: Giroud
authors.forename: M P
authors.initials: MP
authors.lastname: Montmasson
mesh_terms: D000818:Animals; D002417:Cattle; D002467:Cell Nucleus / Q000032:analysis*; D004396:Coloring Agents; D004247:DNA / Q000032:analysis*; D005404:Fixatives; D006652:Histological Techniques; D012394:Rosaniline Dyes
chemical_list: D004396:Coloring Agents; C007722:Feulgen stain; D005404:Fixatives; D012394:Rosaniline Dyes; D004247:DNA