Abstract: An metalloporphyrin-complex-embedded liposome, comprising a cationic metalloporphyrin complex and a lipid having liposome forming ability is disclosed. As metalloporphyrin-complex-embedded liposomes according to the present invention act on superoxide anion radicals (O2?), and can surely lower their concentration, they can exhibit superb effects for the treatment of cancers and have excellent characteristics as antioxidants.

Abstract: The object of the present invention is to provide a novel gas separation membrane having a high gas permeability and a high gas selectivity, and a method of producing the same. The present invention provides a gas separation membrane comprising a polymeric material soluble in an organic solvent, wherein at least a part of the surface is modified by ion bombardment.

Abstract: The object of the present invention is to provide a novel gas separation membrane having a high gas permeability and a high gas selectivity, and a method of producing the same. The present invention provides a gas separation membrane comprising a polymeric material soluble in an organic solvent, wherein at least a part of the surface is modified by ion bombardment.

Abstract: The present invention provides a medical material having an easily-slippery property and durability which the conventional technologies have never provided by fixing a hydrophilic polymer on the surface of a base material through strong covalent bondings and a method for preparation thereof.

Abstract: Fixation of a physiologically active substance on a carrier through an alkylene oxide chain allows the physioactive function of the substance to be retained to a high degree. The fixed physiologically-active substances are useful for separation and purification of materials. The carrier is preferably a thin fiber of 1.0 denier or less, and may be formed from a polymer. The alkylene oxide chain has an amino or epoxy group at one end which bonds to the carrier and a functional group at the other end which bonds to a physiologically-active substance.The carrier is preferably a thin fiber of 1.0 denier or less, and may be formed from a polymer. The alkylene oxide chain has an amino or epoxy group at one end which bonds to the carrier and a functional group at the other end which bonds to a physiologically-active substance.

Abstract: An apparatus for determining the functioning properties of cells which includes a sample containing chamber, a rotor disposed in the chamber and having a conical surface which faces the inner bottom surface of the chamber at an angle of not greater than 2.degree., a ray transmission path from which a ray is projected into a sample of a cell suspension between the rotor and the inner bottom surface, and a transmitted ray detection path from which transmittance from the sample is detected. The optical path length in the sample is not smaller than 1 cm. An adequate shear stress is applied to the sample by adjusting the gap between the rotor and the inner bottom surface and rotating the rotor. A fine response by the cells caused by the applied shear stress, particularly the aggregation of platelets in a platelet suspension, can be accurately and quantitatively determined with a high sensitivity.

Abstract: Provided is an antithrombogenic biomedical material comprising a copolymer of (A) not less than 5% by weight of one or more polymerizable monomers having a polyethylene oxide unit with a degree of polymerization not less than 5 and a polymerizable carbon-carbon double bond and (B) not more than 95% by weight of one or more monomers copolymerizable with said monomer (A).