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https://www.selleckchem.com/products/clozapine-n-oxide.html Interferon regulatory factor 1 (IRF1) is an important regulator in controlling the transcription of type I interferon genes, and its functions have been well-characterized in mammals, birds and fish. However, little information is available regarding the function of amphibian IRF1. In this study, an IRF1 gene homolog named as Xt-IRF1 was identified in the Western clawed frog (Xenopus tropicalis), an amphibian model specie widely used for comparative immunology research. Xt-IRF1 and IRF1 in other vertebrates possess similar genomic structure and flanking genes, and were grouped together to form a separate clade in phylogenetic tree. In addition, Xt-IRF1 gene was constitutively expressed in all tissues examined, with the highest expression level observed in spleen, and was inducible after poly(IC) stimulation. Importantly, the expression of Xt-IRF1 was markedly induced by recombinant type I interferon, and Xt-IRF1 induced a strong activation of both IFNβ and ISRE promoters. The present study opens the door to investigate the roles of IRF1 in amphibians, and thus contributes to a better understanding of the functional evolution of IRFs in lower tetrapods.Chitosan, derived from chitin, has many desirable biomedical attributes. This review aims to explore different sources of chitin and methods of chitosan production with industrial consideration. This article first discussed different sources of chitin for industrial scale production, with considerations given to both their environmental impacts and commercialization potential. Secondly, this article reviews the two categories of chitosan preparation - chemical methods and biological methods - based on existing publications which used lobster by-products as a feedstock source. The mechanisms of the chemical methods are firstly summarized, and then the different chemical agents and reaction parameters used are discussed. Next, both enzymatic and fermentation-bas

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