Background The high effectiveness of vitrification, as a cryopreservation protocol, for human oocytes and embryos is shown, whereas data on human ovarian tissue are limited. This study aimed to assessment of follicular growth, ultrastructure, and apoptosis incidence in human ovarian tissue following vitrification/warming and after culture in the presence of LIF. MaterialsAndMethods Ovarian cort...

background: to achieve multiple oocytes for in vitro fertilization, ovulation induction is induced by gonadotropins however, it has several effects on oocytes and embryo quality and endometrium receptivity. the aim of this study was to assess ultrastructural changes of corpus luteum after ovarian induction using human menopausal gonadotropin (hmg) and human chorionic gonadotropin (hcg) during l...

Flax fibres are valuable reinforcements for tomorrow’s composites. However, defects called kink-bands, which mainly appear on during the extraction and transformation phases, might affect their mechanical properties. Defects induced pores within kink-band investigated in this work. They were morphologically explored using synchrotron phase-contrast X-ray microtomography, a technique that displa...

Abstract Microglia, the immune cells of brain, are a focus studies in neurodegenerative diseases. Similarly, research about induced pluripotent stem cell (iPSC)-derived whole brain and region-specific organoids is increasing. In organoids, complexity culture systems increases, mimicking better actual scenario human brain. Furthermore, animal models do not always recapitulate neurodegeneration, ...

The ultrastructure of the Golgi complex has now been described in detail in a variety of cells of vertebrates (1-10) and in a few invertebrates (11, 12). I t is apparent that the original description of the complex as consisting of a system of smooth membranes, small granules or vesicles, and large vacuoles (1) holds for many cell types, particularly those epithelial cells concerned primarily w...

AIM To investigate the effect of lycopene extracted from tomatoes (LycT) on ultrastructure, glycolytic enzymes, cell proliferation markers and hypoxia during N-Nitrosodiethylamine (NDEA)-induced hepatocarcinogenesis. METHODS Female BALB/c mice were randomly divided into four groups: The Control, NDEA (200 mg NDEA/kg b.w. given i.p.), LycT (5 mg/kg b.w. given orally on alternate days) and LycT...