The test sensitivities and reproducibilities based on different response endpoints (cell density and total cell volume) were compared using both bath and continuous algal toxicity tests. Parameters related to algal cell density are found to be more sensitive and reproducible than total cell volume which bears a direct correlation to algal biomass or dry weight. The magnitude of differences in t...

aquatic environments are often contaminated by various industrial, agricultural and domestic sewage, while different pesticides have markedly different effects on aquatic life. scenedesmus spp. are often used as an indicator to show changes in physico-chemical and environmental conditions of the aquatic ecosystems. this study aimed to investigate the effects of different concentrations of pesti...

Scorpion venom toxicity is of major concern due to its influence on human activities and public health. We investigated the in-vitro process of cell death caused by two Iranian scorpions Odontobuthus doriae and Bothutus salceyi venom on human cell lines. The aim of this study was to provide further information about triggering cell death and suggestion of methods for the elimination of unwanted...

Graphene quantum dots (GQDs) have been of high interest due to their size and optical characteristics, which improves when functional groups are added borders defects. In this work, the in vitro toxicity aqueous dispersion GQDs (w/wo amino-functionalization) was investigated two different cellular models (S. cerevisiae H9c2 cell line). Results yeast suggest that at up 25 % volume concentration,...

The discovery several years ago that fibroblasts and other somatic cells from mice and humans can be reprogrammed to become inducible pluripotent stem (iPS) cells has created enthusiasm for their potential applications in regenerative medicine and for modeling human diseases. Two independent studies in this issue of the JCI provide evidence that iPS cells represent a promising source of hepatoc...