[Lipid droplets and their possible pathways of origin in rat pituicytes].

Callan's hypothesis of the constant movement of the chromomere DNA axis was checked with the method of 3H-uridine radioautography. The hypothesis was not corroborated as the RNA synthesis proceeded in chromomeres of lampbrush chromosomes on the stationary axis with formation of transcriptional units. Data on localization and count of transcriptional units are discussed with regard to structural and functional organization of chromomere in meiotic chromosomes of eukaryotes.