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Astaxanthin, a naturally occurring xanthophyll, is commercially used as a coloring agent in salmon feed, but also marketed as a dietary supplement. The objective of this study was to investigate the subchronic toxicity of synthetic [3S, 3′S]-Astaxanthin in rats. A powder formulation containing approximately 20% [3S, 3′S]-Astaxanthin was administered via the diet to groups of 10 male and 10 female...
Colloidal quantum dots (QD) show great promise as fluorescent markers. The QD used in this study were obtained in aqueous medium rather than the widely used colloidal QD. Both methodologies used for the production of QD are associated with the presence of heavy metals such as cadmium (Cd). Here we investigate the short-term inhalation toxicity of water-soluble core-shell CdS/Cd(OH) 2 QD. Male...
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