Abstract: This invention relates to a method of high sensitivity luminescence analysis using, as an enhancer, 2-hydroxy-9-fluorenone, the compound expressed by the following formula ##STR1## or an oxazole compound expressed by the formula ##STR2## in the formula R.sub.1 representing hydrogen, C.sub.n H.sub.2n+1 (here, n representing a positive integer of 1 to 4), XC.sub.n H.sub.2n (here, X representing F, Cl, Br or I, and n representing a positive integer of 1 to 4), C.sub.n H.sub.2n+1 CO.sub.2 (n being as defined above), a phenyl group, a naphthyl group, C.sub.n H.sub.2n+1 C.sub.6 H.sub.4 (n being as defined above), YC.sub.6 H.sub.4 (Y representing F, Cl, Br, I or a phenyl group) or XYC.sub.6 H.sub.3 (X and Y being as defined above).

Abstract: A method of assaying biologically active substances by the competitive method or by the sandwich technique, characterized in that fine particles having a diameter of 0.03 to 3 .mu.m are used in the labelling agent.

Abstract: The activity of cells is assayed by mixing the cells capable of endocytosis with microbeads 0.03-20 .mu.m. in diameter containing a chemiluminecent substance and measuring the intensity of the luminescence generated by the action of highly reactive oxygen with the microbeads taken inside the cells.

Abstract: Immunochemicals having an amino group are immobilized by covalent bonding on fine particles having an average diameter of 0.03 to 10 .mu.m, the fine particles comprising a polymer having the repeating unit of glycidyl acrylate or glycidyl methacrylate and the fine particles not having on the surface thereof a hydrophobic component other than the above unit, whereby there are obtained immunoparticles effective as a diagnostic reagent for immunological tests for detecting or measuring a component in human or animal body fluids or for labeling cells.

Abstract: A diagnostic reagent for immunological tests for detecting or measuring a component in human or animal body fluids or for labeling cells, including immunochemicals immobilized on a particulate carrier characterized in that fine particles having an average diameter in the range of about 0.03 to about 10 .mu.m and comprising a cross-linked polymer having a repeating unit represented by the general formula ##STR1## wherein R stands for hydrogen or a methyl group, are used as the particulate carrier.

Abstract: Provided is a cross-linked polymer composition which can be in a transparent polymeric gel form having an equilibrium water content of at least 60 wt.% for use in soft contact lenses. The cross-linked polymer composition is prepared by polymerizing, using a bulk polymerization procedure, a monomer mixture comprising an alkyl methacrylate and an N-vinyllactam in the presence of a cross-linking agent comprising at least one compound selected from vinyl acrylate, vinyl methacrylate, triallyl isocyanurate and vinyl carboxylates expressed by the formula:R--COOCH.dbd.CH.sub.2).sub.nwhere R is a hydrocarbon radical having 1 to 10 carbon atoms and n is an integer of 2, 3 or 4.