254 research outputs found
The Course of an Axon of a Dermal Photoreceptor Cell in Onchidium : Reconstruction Study through Serial Semi-thin Sections of the Osmium-Impregnated Dorsal Mantle Papilla(Issue Commemorating the Directorship of Prof. Yoko HASHIMOTO, at the Department of Physiology)
No full textDermal photoreceptor (DP) cells, an extraocular photoreceptor, were distributed abundantly in clusters in the dermis of the dorsal mantle papillae of Onchidium. The DP cell was oval in shape and measured 40～50 μm in diameter. The distal portion of the cell consisted of massive microvilli. The proximal one contained a large, irregularly-shaped nucleus and a great number of photic vesicles of 80 nm in diameter. A single axon extended laterally from the confined boundary area between the distal and proximal portions. The axon of the DP17 cell which was located at the periphery of a cluster containing 19 DP cells was examined in the present study. The axon was observed from the site of emergence up to the site joining the small papillar nerve (SPN) through 222 of 700 serial semi-thin sections (0.4 μm in thickness) of an osmificated specimen at both 200 kV with an H-700 and at 1,000 kV with an H-1250M Hitachi electron microscope. The axon arose from the basal area of the microvilli, traveled in the dermal connective tissue, passed nearby muscle fibers and lumens, and finally joined an SPN which was located outside the cluster. The axon was variable in size and in structure at various parts of its course, and was enclosed with a sheath structure. These results suggest that the axon may conduct the photic information from the DP cell to the central nervous system
Receptor Potential of Dermal Photoreceptor Cells and Spike Responses in a Small Papillar Nerve in the Mantle of Onchidium verruculatum (Gastropoda, Mollusca)(Issue Commemorating the Directorship of Prof. Yoko HASHIMOTO, at the Department of Physiology)
No full textDepolarizing responses to light of dermal photoreceptor (DP) cells which were scattered under the epidermis of Onchidium verruculatum were recorded by intracellular electrodes, and spike responses were recorded with suction electrodes from a small papillar nerve of a mantle which includes axons from the DP cells. When the DP cell was dark-adapted, the resting membrane potential was -40 to -60 mV, and a depolarizing response to light appeared. Amplitude of the depolarizing response increased with increasing light intensity. The depolarizing response was associated with an increase in membrane conductance. The depolarization was accompanied by a huge afterhyperpolarization which reached -100 mV and continued for 10～15 minutes. During the afterhyperpolarization, the amplitude of the depolarizing response reached 100 mV to strong light stimulation. Dynamic range of the receptor potential in dark adaptation reached -6.0 log units. The spectral sensitivity curve obtained from the threshold criteria of the receptor potential of DP cells appears to be that of a single Dartnall pigment having maximum absorption at about 520 nm. Two types of spikes elicited to light from a small papillar nerve of mantle were the sustaining-type and the delayed off-type. Both types showed the same spectral sensitivity to the DP cell. On the basis of electrophysiological findings it is suggested that visual information from DP cells is conducted via the small papillar nerve to the central nervous system
Meeting minutes for Yoke Kuromi's memorial dinner
No full textMeeting minutes for Yoke Kuromi's Memorial Dinner.This collection contains two photograph albums and material related to Hitoshi "Yoke" Kuromi and Corrine Nobuko Nishimura Kuromi. Subjects in the collection include the Kuromi family, the Gila River incarceration camp, and hot rods, and classic cars
Highly fucosylated N-glycan ligands for mannan-binding protein expressed specifically on CD26 (DPPVI) isolated from a human colorectal carcinoma cell line, SW1116
No full textMeeting minutes for Yoke Kuromi's memorial dinner, May 20, 1970
No full textA copy of the meeting minutes for Yoke Kuromi's Memorial Dinner.This collection contains two photograph albums and material related to Hitoshi "Yoke" Kuromi and Corrine Nobuko Nishimura Kuromi. Subjects in the collection include the Kuromi family, the Gila River incarceration camp, and hot rods, and classic cars
Letter from John Lancaster, General Chairman, A.I.F.D.
No full textLetter from John Lancaster, General Chairman for the American Institute of Floral Designers (A.I.F.D.) regarding the Yoke Kuromi Memorial Dinner.This collection contains two photograph albums and material related to Hitoshi "Yoke" Kuromi and Corrine Nobuko Nishimura Kuromi. Subjects in the collection include the Kuromi family, the Gila River incarceration camp, and hot rods, and classic cars
Letter from John Lancaster, Unit President, A.I.F.D., January 29, 1970
No full textLetter from John Lancaster, Unit President, American Institute of Floral Designers (A.I.F.D.), possibly addressed to the Southern California Teleflora Unit about the funeral for Yoke Kuromi.This collection contains two photograph albums and material related to Hitoshi "Yoke" Kuromi and Corrine Nobuko Nishimura Kuromi. Subjects in the collection include the Kuromi family, the Gila River incarceration camp, and hot rods, and classic cars
Letter from John Lancaster, Unit President, A.I.F.D., January 29, 1970
No full textLetter from John Lancaster, Chairman, American Institute of Floral Designers (A.I.F.D) addressed to the florists who are interested in attending the Yoke Kuromi Memorial Dinner.This collection contains two photograph albums and material related to Hitoshi "Yoke" Kuromi and Corrine Nobuko Nishimura Kuromi. Subjects in the collection include the Kuromi family, the Gila River incarceration camp, and hot rods, and classic cars
<Original Paper>Desdemona's Lie in Othello
No full textP(論文)http://www.kawasaki-m.ac.jp/soc/mw/journal/en/2003-e09-1/05-hashimoto.pdfdepartmental bulletin pape
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