Hidekazu Morioka

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Ultrastructural studies of thin-sectioned and freeze-cleaved materials were performed on developing retinal tissues of 3- to 9-day-old chick embryos to clarify the junctional structures between neural retinal cells and between neural retinal cells and cells of the pigmented epithelium. Frequency, size and position of gap junctions in developing neural(More)
The presence of carbohydrates in the pellicle of Pneumocystis carinii was demonstrated by methenamine silver (MS) and thiocarbohydrazidesilver proteinate (TCH-SP) staining techniques. An intense, positive reaction with MS was observed on both the electron-dense outer layer and the electron-lucent middle layer of the pellicle, whereas in the case of TCH-SP(More)
Gap junctions in the neural retinae of newly hatched chickens were examined in thin section and by freeze cleaving. Unusual gap junctions containing linear arrays of intramembrane particles are found between principal and accessory cones which form a double cone at the region of the outer limiting membrane. These unusual gap junctions are often continuous(More)
Rats were fed plant sterols containing campesterol and β-sitosterol in the different proportions, and their distribution in serum lipoproteins and in liver subcellular fractions was determined. In serum lipoproteins, the percentage as well as the concentration of plant sterols increased with the increase in the density of lipoproteins. Thus, high density(More)
(001)/(100)-oriented epitaxial Pb(Zr<sub>0.44</sub>Ti<sub>0.56</sub>)O<sub>3</sub> (PZT) film with 2.4 mum thickness and complex domain structures were grown on SrRuO<sub>3</sub>-coated (001) KTaO<sub>3</sub> single crystal substrates by metalorganic chemical vapor deposition. Newly developed two-dimensional X-ray diffraction was carried out the structural(More)
A new catalytic asymmetric oxidation of sulfides to sulfoxides in water using the hypervalent iodine(V) reagent iodoxybenzene (PhIO2) has been developed. This methodology is distinctly different from the previously reported use of cyclodextrins or biological catalysts and provides a new route to asymmetric sulfoxidation in water.
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