[New methods of identifying chromosomes].

The data are considered on the possibility to identify chromosome after differential inhibition of their spiralization when staining the preparations with acrichin derivatives with the subsequent application of fluorescent microscopy as well as with staining by Giemza after treatment of the preparations with hot salt solutions, alkalies or proteolytic enzymes. Materials of the Paris Conference on the human chromosome nomenclature 1971 are described briefly and recommendations of the Committee on standardization of the mice genetic nomenclature are given.