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The electromagnetic field (EMF) has an effect on various organs, including the female reproductive system. The purpose of this study was to evaluate the impact of carnosine on ovarian follicle number and diameter in rats exposed to a 900 Megahertz (Mhz) electromagnetic field. In this study, six different groups were used. 40 female rats divided into groups were evaluated. The ovaries of the rats were removed at the end of the study. Routine histological procedures were performed on ovarian tissues. Follicle number and diameter of all groups were calculated and evaluated under the light microscope. When primary follicle number and diameters were compared statistically among the groups, there was a remarkably meaningful difference between the EMF group and the control, 20 mg carnosine and EMF+20 mg carnosine groups (p<0.05). There were significant irregularities in the structure of the oocyte and the granulosa cells surrounding the oocyte, especially in the EMF-treated groups. However, the structure of the oocyte and the granulosa cells surrounding the oocyte in the EMF+20 mg carnosine group showed a more regular structure compared to the EMF group. In this study, it can be concluded that the number and diameter of ovarian follicles decreased in rats exposed to electromagnetic field and 20 mg of carnosine may prevent damage caused by EMF.

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Introduction: The ear, originates from the ectoderm, exhibits a complex structure that differs from species to species in terms of development. Objectives: This study was conducted to describe the prenatal and postnatal development process of the organ of Corti in the iner ear using light microscopy. Methods: In this study, Wistar Albino rats were used. The rats were divided into two groups as prenatal and postnatal groups. Prenatal groups consisting of embryos on day 17, 19, 21 and postnatal groups consisting of pups on days 1, 5, 10 and 15. The rats were sacrificed to investigate the cochleas by light microscopy. Results: The lumen of the cochlear tunnel was lined with pseudostratified columnar epithelia throughout the prenatal period. The cochlear tunnel was not divided into scala media, scala tympani and scala vestibuli in the embryonic sections. Organ of corti hasn’t taken its final form until postnatal day 15. Conclusion: In rats, formation of organ of Corti is completed in postnatal 15 day. Pups of rats are not able to hear in the embronic and early postnatal life.