Abstract:
BST2 antibodies were selected by using as an indicator the binding between BST2 antibodies and various splicing variants of human BST2 antigen. As a result, the present inventors successfully obtained BST2 antibodies that specifically recognize BST2D, which has been reported to be expressed at high levels in cancer cells. The antibodies of the present invention specifically bind to cells expressing BST2D. Non-specific antibody binding to non-target tissues, which results in the decrease of antibody concentration in blood, can be prevented by using the antibodies of the present invention therapeutically. Alternatively, the present invention provides diagnostic agents comprising an antibody of the present invention, which specifically detect tissues expressing BST2D.
Abstract:
An antibody binding to IPC was obtained by using an animal cell in which a cell membrane protein associatable with ILT7 was co-expressed as an immunogen. The antibody of the invention has a high specificity which allows immunological distinction between other ILT family molecules and ILT7. The anti-ILT7 antibody of the invention bound to IPC and inhibited the activity thereof. With the anti-ILT7 antibody of the invention, the IPC activity can be inhibited and an interferon-related disease can be treated or prevented. ILT7 expression is maintained even in IPC in the presence of IFNα. Therefore, an inhibitory action of IPC activity by the anti-ILT7 antibody can be expected even in an autoimmune disease patient with an increased production of IFNα.
Abstract:
There is provided a self-routing optical switch array formed by connecting m stages of optical switches and set so as to satisfy the relation:.lambda..sub.a1
Abstract:
A semiconductor optical device and an optical device array is provided which can be used in an optical logic circuit, photonic switching OEIC, etc. The device includes a light amplifying arrangement provided on a bypass waveguide that connects a plurality of optical waveguides, thereby enabling improvement of the light crosstalk and the light propagation loss. In particular, by virtue of providing a light amplifying means in addition to the light deflecting portion, noise components are not amplified, and, therefore, the SN ratio is markedly increased.
Abstract:
A semiconductor optical device and an optical device array is provided which can be used in an optical logic circuit, photonic switching OEIC, etc. The device includes a light amplifying arrangement provided on a bypass waveguide that connects a plurality of optical waveguides, thereby enabling improvement of the light crosstalk and the light propagation loss. In particular, by virtue of providing a light amplifying means in addition to the light deflecting portion, noise components are not amplified, and, therefore, the SN ratio is markedly increased.
Abstract:
An ion beam (113) focused into a diameter of at most 0.1 .mu.m bombards substantially perpendicularly to the superlattice layers of a one-dimensional superlattice structure and is scanned rectilinearly in a direction of the superlattice layers so as to form at least two parallel grooves (108, 109, 110, 111) or at least two parallel impurity-implanted parts (2109) as potential barrier layers, whereby a device of two-dimensional superlattice structure can be manufactured. At least two parallel grooves (114, 115, 116, 117) or impurity-implanted parts are further formed orthogonally to the potential barrier layers of the two-dimensional superlattice structure, whereby a device of three-dimensional superlattice structure can be manufactured. In addition, deposition parts (2403, 2404, 2405) may well be provided by further depositing an insulator into the grooves (108, 109, 110, 111, 114, 115, 116, 117) which are formed by the scanning of the ion beam. Owing to these expedients, the portions of the two-dimensional and three-dimensional superlattice structures can be manufactured with ease and at high precision.
Abstract:
The present invention provides a waveguide type optical switch which has a high extinction ratio and can be driven efficiently at a low voltage or a low current injection. Where the waveguide type optical switch is used as a reflection type optical switch, the switch section is of current confinement structure, and where it is used as a directional coupler type optical switch, the pn junction is formed in the position where the optical electric field takes the maximum value for the fundamental mode of the light propagating in the waveguide.
Abstract:
A carbon component having a hole therein and an outer surface covered with a ceramic coating, and a method for manufacturing the carbon component are provided. The carbon component includes two carbon plate members joined together. The hole is defined by a groove formed on a mating surface of at least one of the carbon plate members and a mating portion of the other of the carbon plate members, which opposes the groove. An inner surface of the hole including a surface of the groove is entirely covered with a ceramic coating.
Abstract:
A semiconductor device includes a region in which carriers are transferred in the lamination direction of a multiple quantum well, such as a multiple quantum well multiplication layer of a superlattice APD. A superlattice structure with a varying well width is introduced to a hetero-interface present in the transfer region, thereby preventing pile-up of the carriers.
Abstract:
The present invention relates to an improvement in the optical transmission characteristics of a ridged type of optical waveguide in an optical integrated circuit. The invention is directed to reducing the effects of irregularities in the ridge sides on the optical transmission losses of the optical waveguide. According to the present invention, therefore, a hardened film of a heat-resistant, high-molecular resin is applied over the ridges and the optical waveguide, greatly reducing the optical transmission losses in the optical waveguide. An appropriate thickness of the heat-resistant, high-molecular resin film is between 200 to 1,000 nm, in consideration of the electric and magnetic fields applied thereto for the operation of the circuit. The present invention makes it possible to provide an optical integrated circuit with an optical waveguide which has low optical transmission losses.