Báo cáo khoa học: "Comparative immunohistochemical characterization of canine seminomas and Sertoli cell tumors" ppt

... sheets of the affected seminiferous tubules. These cells replaced the normal lining of spermatogenic and Sertoli cells. Large and irregular cellular aggregates and small clusters of cells were ... c-KIT, and desmin) are expressed in canine seminomas and Sertoli cell tumors (SCTs). We examined 35 canine testicular tumors, 20 seminomas and 15 SCTs. c-KIT was expressed markedly in canine seminomas. ... PLAP, AFP, OCT3/4, and CD30 produced no immunoreactivity in normal testis (data not shown). Seminomas consisted of aggregates of germ cells that Canine seminomas and Sertoli cell tumors 3Tabl...

Báo cáo khoa học: Comparative biochemical characterization of nitrile-forming proteins from plants and insects that alter myrosinase-catalysed hydrolysis of glucosinolatesk docx

... using 1 unit NSP and 1 unit myrosinase. Chelators were added to a final concentration of 5mM. Activities of ESP and NSP are expressed as the amount of epithiopropyl cyanide (ESP) and benzyl cyanide ... ESPactivity. In this series of assays, the formation of epith-ionitrile accounted for a maximum of 85% of theamount of total hydrolysis products. The resultsshowed that addition of Fe2+in various ... minfinal hold). MS and FID were carried out as describedpreviously [15]. Products were identified by comparison of mass spectra and retention times with those of authenticstandards and with published...

Báo cáo khoa học: " An immunohistochemical study of chromogranin A and Sp-1 immunoreactive cells in the gastrointestinal tract of ovariectomized rats" pdf

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Tài liệu Báo cáo khoa học: NMR structural characterization of HIV-1 virus protein U cytoplasmic domain in the presence of dodecylphosphatidylcholine micelles doc

... nmindicative of a predominantly unordered protein. Theaddition of DPC micelles caused local minima near 220 and 205 nm and a maximum around 195 nm, reminis-cent of the extreme values at 222, 208 and ... FEBSretained in the centre of the interhelical linker and atthe C-terminus of micelle-associated VpUcyt.Position of VpUcyt relative to the micelleNMR signal intensities of individual VpUcyt regionswere ... acid in the interior of the micelle (A) and Mn2+inthe aqueous buffer (B) selectively attenuate distinct regions of VpU-cyt, reﬂecting the topology and the dynamics of the micelle-associ-ated...

Báo cáo khoa học: Mass spectrometric characterization of the covalent modiﬁcation of the nitrogenase Fe-protein in Azoarcus sp. BH72 ppt

... one of the most abundant enzymes in the biosphere [1,2]. Itconsists of the Fe-protein (dinitrogenase reductase,also referred to as NifH), an a2dimer of the nifH geneproduct and of the MoFe-protein ... striking difference of the MALDI-TOF spec-tra from the modified Fe-protein in comparison to theunmodified Fe-protein is the decreased intensity of peak1625.4 m ⁄ z and the absence of peak 1616.3 ... other proteins.Results and DiscussionSite-directed mutagenesis of the target arginine of dinitrogenase reductaseAn indication for the covalent modification of onesubunit of dinitrogenase reductase...

Báo cáo khoa học: Comparative structure analysis of proteinase inhibitors from the desert locust, Schistocerca gregaria pptx

... SGCI (A) and SGTI (B);angular order parameters [26] of / and w torsion angles of SGCI (C) and SGTI (D) and chemical shift indices [22] for SGCI (E) and SGTI (F).Positions of the b strands are ... properties o f t he amide protons of SGCI[L30R, K31M] are very similar to that of SGCI.Both the amide proton of Lys13 of SGCI and of SGCI[L30R, K31M] variant and Asp13 of SGTI arequicklyexchanging, ... 11±16loop and and in the 20±25 loop, as well as in the P2¢ and P 3¢positions of the binding loop. The residues with the greatestDdNHvalues are Thr16 and, more interestingly, Gln35. Themajority of...

Báo cáo khoa học: "Implementing a Characterization of Genre for Automatic Genre Identification of Web Pages" pot

... > 1, and LN is typically a number < 1. Usually LS*LN=1. In this implementation of the model, LS and LN were set to 1.25 and 0.8 respectively, on the basis of previous studies and empirical ... Although both Crowston and Williams (2000) and Shepherd and Watters (1998) have well described the evolution of genres on the web, when it comes to the actual genre identification of web pages (Roussinov ... et al., 2001; and Shepherd et al., 2004, respectively), they set aside the evolutionary aspect and consider genre from a static point of view. For Crowston and Williams (2000) and the follow-up...

Báo cáo khoa học: "A Descriptive Characterization of Tree-Adjoining Languages (Project Note)" ppt

... Descriptive Characterization of Tree-Adjoining Languages (Project Note) James Rogers Dept. of Computer Science Univ. of Central Florida, Orlando, FL, USA Abstract Since the early Sixties and Seventies ... languages was obtained by Thatcher and Wright (1968) and Doner (1970) who established that the CFLs were all and only the sets of strings forming the yield of sets of finite trees definable in the ... are exactly the class of tree manifolds generated by TAGs if one re- laxes the usual requirement that the labels of the root and foot of an auxiliary tree and the label of the node at which...

Báo cáo khoa học: In vitro characterization of a plastid terminal oxidase (PTOX) pot

... protein inE. coli and studied its substrate preferences, the factorsinﬂuencing its activity and the nature of suitable metalcofactors and inhibitors in vitro.Materials and methodsChemicalsThe ... alsoknown inhibitors of the mitochondrial AOX [10,11]. Thus,AOXs and PTOX share similar structural and catalyticfeatures. However, a number of established characteristics of AOXs, such as regulatory ... activityTo examine the role of iron and other metals, PTOXexpressing bacteria and control bacteria were grown in thepresence of 50 lMo-phenanthroline, a chelator of divalentcations [18], which...

Báo cáo khoa học: "An immunohistochemical study of the gastrointestinal endocrine cells in the ddY mice" doc

... in the inter-epithelial cell and intestinal glandregions of the duodenum (Fig. 3e) and open typed CCK-8-IR cells were restricted to the inter-epithelial cell regions of the jejunum (Fig. 3f). ... “markers” of allneuroendocrine cells [4,11]. Although, the distributionalpatterns of these CG-IR cells in the GI tract of RodentiaFig. 3. Gastrin- and CCK-8-IR cells in the GI tract of ddY ... secretogranin), the members of which are known to be present in the secretory granules of abroad spectrum of amine and peptide-producing cells of adrenal medulla and gastrointestinal endocrine...

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