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Electron microscopic studies have been made of the epithelial reticular cells of the thymus in mice of both sexes ranging in age from 5 to 8 weeks. The epithelial cells generally have long cytoplasmic processes by which they are interconnected and form a network throughout the organ. The processes adhere tightly to one another by desmosomes. At the surface(More)
In the general stress response of Bacillus subtilis, which is governed by the sigma factor σ(B), stress signalling is relayed by a cascade of Rsb proteins that regulate σ(B) activity. RsbX, a PPM II phosphatase, halts the response by dephosphorylating the stressosome composed of RsbR and RsbS. The crystal structure of RsbX reveals a reorganization of the(More)
The development and maturation of Langerhans cells during the differentiation of skin was studied in mice from fetal day 13 to adult using 3 indices: (1) ATPase activity; (2) ultrastructure; and (3) quantitative evaluation of the cell population. ATPase-positive Langerhans cells appeared in the epidermis at first at fetal day 16, and they increased in(More)
Quantitative deconvolution of a chromatographic peak with extremely low UV absorption (less than 0.005 A.U.) is demonstrated for the analysis of an anaesthetic (ketamine) in rabbit serum. One ketamine metabolite, nor-ketamine, was deconvoluted from a completely fused peak in the three-dimensional chromatogram by using a highly sensitive multi-wavelength UV(More)
A recently developed novel Ti-29Nb-13Ta-4.6Zr alloy (Ti-Ta) was investigated physically and chemically, and the results suggested it to be a possibly suitable dental material. In this study we analyzed the effects of the alloy, in comparison with those of other dental metals, on the adhesion, spreading, and proliferation of human gingival fibroblasts (Gin-1(More)
A novel method for an all-around display system that shows three-dimensional stereo images without the need for special goggles has been developed. This system simply needs a directional-reflection screen, mirrors, and a standard projector. The basic concept behind this system is to make use of the phenomenon called "afterimage" that occurs when screen is(More)
Three-dimensional displays are drawing attention as next-generation devices. Some techniques which can reproduce three-dimensional images prepared in advance have already been developed. However, technology for the transmission of 3D moving pictures in real-time is yet to be achieved. In this paper, we present a novel method for 360-degrees viewable 3D(More)
We developed Layered Touch Panel that expands the interaction techniques of touch panel. Layer Touch Panel has two touch panel layers, so that it is able to distinguish two touch states such as "finger on screen" and "finger above screen". With the structure, Rollover effect and Pick & Drop that are not available in normal touch panel are available in(More)