[Analysis for pheromone-induced cytogenetic disturbances depending on major urinary proteins of male laboratory mice].

Young male CBA/LacStoRap mice for 2 h were exposed to pheromones that are transferred by major urinary proteins of sexually mature males of the same line. The treatment was conducted using either a complete set of the major urinary proteins typical of the CBA mice or incomplete set of protein fractions detected in some animals. The effect of pheromones was estimated 24 h after treatment by cytogenetic analysis for disturbances in dividing bone marrow cells at anaphase--telophase and in germ cells at metaphase I.

[Cytogenetic effects of pheromones on bone marrow cells in male Mus musculus L. mice].

Young male CBA/LacStoRap mice were exposed for two hours to volatile components of native or dialyzed urine (VC or VCd, respectively) of mature males of the same line. To estimate the effects of VC and VCd on bone marrow cells, cytogenetic analysis of mitotic disturbances in anaphase-telophase cells was performed. The overall frequency of mitotic disturbances in VC-treated mice became significantly higher 24 and 48 h after exposure but returned to the initial level 72 h after exposure (P < 0.