MOTIVATION Drosophila melanogaster is a major model organism for investigating the function and interconnection of animal genes in the earliest stages of embryogenesis. Today, images capturing Drosophila gene expression patterns are being produced at a higher throughput than ever before. The analysis of spatial patterns of gene expression is most biologically meaningful when images from a simil...

how to cite this article: yaghini o, kelishadi r, keikha m, niknam n, sadeghi s, najafpour e, ghazavi mr. prevalence of developmental delay in apparently normal preschool children in isfahan, central iran. iran j child neurol. summer 2015;9(3):17-23. abstract objective developmental delay screening is essential in pediatric medicine. the purpose of this study was to estimate the developmental d...

Background: Growth differentiation factor -9B (GDF-9B) is an oocyte derived growth factor, this protein is essential for development of ovarian follicles and act mainly by binding to its receptor on the surface of granulosa cells. The effect of this factor on the growth of follicles in various developmental stages particularly primordial and primary follicles is unknown. The aim of this study w...

Both developmental and adult-stage hypothyroidism disrupt rat hippocampal neurogenesis. We previously showed that exposing mouse offspring to manganese permanently disrupts hippocampal neurogenesis and abolishes the asymmetric distribution of cells expressing Mid1, a molecule regulated by sonic hedgehog (Shh) signaling. The present study examined the involvement of Shh signaling on the disrupti...

During the 3-h developmental stage 14 in the chick, intercellular transfer of iontophoresed fluorescent dyes becomes less sensitive to the lowering of intracellular pH by either CO2 or acetate ions. Up to developmental state 14, dye transfer between lens cells is reversibly blocked by exposure to 50% CO2. Beyond stage 14, dye transfer between these cells is no longer reversibly blocked by eleva...

The objective of this retrospective study was to evaluate the factors influencing developmental stage of bovine embryos recovered from superovulated dairy cattle 7 d after estrus. From 217 superovulated dairy cows and heifers, 2,211 eggs were recovered, of which 1,495 were classified as transferable embryos based on morphological evaluation of developmental stage and quality. From the evaluated...

In this research, some independent experiments were carried out for investigating the effects of microspore developmental stage, bud pretreatments (cold, heat and Ca), and embryo induction medium on anther culture of some strawberry cultivars. The results showed that the percentages of responsive and embryogenic anthers in cultivar Paros in liquid medium were influenced not only by different de...