Diurnal changes in the ultrastructure and volumes of nuclei in liver cells of Hemidactylus frenatus in variable lighting conditions.

The research was carried out on young, mature specimens of Hemidactylus frenatus. The diurnal changes in the nucleus ultrastructure, especially changes in the number of perichromatin granules (PG), were investigated. The results let us come to the conclusion that the number of PG distinctly changes in twenty four hours and shows a negative correlation with the nuclei volumes.