introduction: marginal adaptation is the most critical item in long-term prognosis of single crowns. this study aimed to assess the marginal quality as well asthe discrepancies in marginal integrity of some pfm single crowns of posterior teeth by employing parallel radiography in shiraz dental school, shiraz, iran. methods: in this descriptive study, parallel radiographies were taken from 200 f...

Marginal zone (MZ) B cells are absent in CD19(-/-) mice. Possible causes include an intrinsic defect in B cells and/or a secondary defect in the extrinsic MZ microenvironment as a result of changes in B cell differentiation in mice lacking CD19. Cells in the MZ also include MZ macrophages (MZM) and MZ dendritic cells (DC). Although CD19 is only expressed on B cells, SIGN-R1(+) MZM are absent an...

Epigenetic mechanisms, including DNA methylation, play an important role in not only the development and maturation of normal cells, but also the development and progression of malignant cells. In this edition of Blood, Arribas et al show that DNA methylation profiling identifies 2 subtypes of splenic marginal zone lymphoma with different clinical and genetic features. These findings provide an...

The radial symmetric cnidarians are regarded as being close to the common metazoan ancestor before bilaterality evolved. It is proposed that a large fraction of the body of this gastrula-like organism gave rise to the head of more evolved organisms. The trunk was added later in evolution from an unfolding of a narrow zone between the tentacles and the blastoporus. This implies that, counter int...

A 73-year-old man who had undergone coronary artery bypass surgery 13 years previously (mammary to left anterior descending artery and saphenous to the second diagonal, obtuse marginal, and posterior descending arteries) was referred for an inferior ST-segment elevation myocardial infarction. Chest radiography disclosed an image occupying a part of the right hemithorax (Figure, A, red arrows). ...

This paper examines genre trends in the top 50 grossing films at the US box office each year from 1991 to 2010, focussing on the frequency and rank of different genres, the box office gross and release patterns of films in different genres, and the release profile of Hollywood studios. The results show a narrowing of the range of genres at the highest rankings, with fantasy/science fiction movi...

We present a method for unsupervised content based classification of images. The idea is to first segment the images using centroid models common to all the images in the set and then through bringing an analogy between models/images and words/documents to apply algorithms from the field of unsupervised document classification to cluster the images. We choose our centroid models to be histogram...

Magnifying endoscopy with narrow-band imaging (M-NBI) can visualize superficial microanatomies in the stomach. The normal morphology of the microanatomy visualized by M-NBI differs according to the part of the stomach. The gastric fundic glandular mucosa appears as a regular honeycomb-like subepithelial capillary network (SECN) pattern with a regular collecting venule pattern and regular oval c...

A principal provides budgets to agents (e.g., divisions of a …rm or the principal’s children) whose expenditures provide her bene…ts, either materially or because of altruism. Only agents know their potential to generate bene…ts. We prove that if the more “productive” agents are also more risk-tolerant (as holds in the sample of individuals we surveyed), the principal can screen agents and bols...