title: [Fluorescence study of X and Y chromatin in frozen sections].
abstract: Chinacrine fluorescence of the Y chromatin in histological sections is a useful tool for determination of nuclear sex. Nuclei of fibroblasts and smooth muscle cells seems to be most suitable for this investigation. Tissue specimens should be fixed for 5 minutes in hot formalin. Frequency of the Y chromatin in frozen sections of male origin was found to be 38--70 per cent, in paraffin embedded sections 28--44 per cent. It seems likely, that paraffin decreases chinacrin binding capacity of the Y chromatin. Frequency of the Barr-body in tissue specimens of female origin was found to be similar both in frozen and paraffin embedded sections. For the investigation of X and Y chromatin in tissue sections the technique of frozen sections should be used.
mesh_terms: D001065:Appendix / Q000648:ultrastructure; D001706:Biopsy; D003106:Colon / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008297:Male; D008856:Microscopy, Fluorescence; D012728:Sex Chromatin / Q000032:analysis*; D012730:Sex Chromosomes; D012867:Skin / Q000648:ultrastructure; D013270:Stomach / Q000648:ultrastructure; D014599:Uterus / Q000648:ultrastructure
vernacular_title: Az X és Y chromatin fluorescens vizsgálata fagyasztott metszetben