OBJECTIVE To determine by low-dose computed tomography (CT) protocol the dental and periodontal effects of rapid maxillary expansion (RME). MATERIALS AND METHODS The sample comprised 17 subjects (7 males and 10 females), with a mean age at first observation of 11.2 years. Each patient underwent expansion of 7 mm. Multislice CT scans were taken before rapid palatal expansion (T0), at the end o...

Recent two dimensional nuclear magnetic resonance (NMR) techniques access exchange in pore structures through surface relaxation and diffusion based relaxation [1-4]. This research applies these techniques to measure pore changes due to biofilm growth and the impact this growth has on diffusion transport. The porous media used in this study are model beadpacks constructed from borosilicate glas...

IL-7 is a critical cytokine for lymphocyte development. Recent work has highlighted critical roles for IL-7 signaling in mature T cell homeostasis and function, but its role in B cells is less well characterized. Using a knock-in mouse possessing a Tyr to Phe mutation at position 449 (IL-7Rα(449F/449F) mice) within the cytoplasmic SH2-binding motif of IL-7Rα, we evaluated the role of IL-7Rα Y44...

BACKGROUND Clinical protocols aimed to characterize the post-myocardial infarction (MI) heart by cardiac magnetic resonance (CMR) need to be standardized to take account of dynamic biological phenomena evolving early after the index ischemic event. Here, we evaluated the time course of edema reaction in patients with ST-segment-elevation MI by CMR and assessed its implications for myocardium-at...

To think that use constitutes meaning is an appealing idea, but also notoriously di cult to make precise. After reflecting on the notion of use-constituted meaning that signaling theory, in the vein of Lewis (1969) and Skyrms (2010), gives us, I suggest a notion of signal meaning that draws on adaptationist theories of biological communication. Such a criterion has interesting consequences, suc...

By using the apparatus (2) and medium (3) previously described, we have prepared two 4 to 5 liter batches of T2 bacteriophage by infection of the usual host, Escherichia coli, strain B. The raw titers were 1 and 3 X 1Ol2 infectious T2 particles per ml. Purification of these lysates by three or four cycles of deliberately wasteful differential centrifugation yielded some 1.5 to 2 gm. each of lyo...

M. F. Koff, F. A. Khan, K. K. Amrami, K. R. Kaufman Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, United States, Department of Radiology, Mayo Clinic, Rochester, MN, United States INTRODUCTION MRI provides a non-invasive method to diagnose pathologies of diarthrodial joints. T2-weighted images have been shown to identify late stage chondromalacia to a high level of sensitivity a...

PURPOSE To correlate the MRI features of sclerosed hemangiomas with histologic appearance. MATERIALS AND METHODS A medical record search identified patients with sclerosed hemangioma who underwent MRI and biopsy/resection from January 2000 to March 2012 for this retrospective institutional review board approved study. Two radiologists independently performed image analysis. A pathologist eval...