A composition for detecting blood includes 3,3', 5, 5'-tetramethylbenzidine, cumene hydroperoxide, and a surfactant. The composition is an aqueous solution. The surfactant is an anionic surfactant or a non-ionic surfactant. The composition is useful for the detection of blood, in particular occult blood in saliva. Also described are methods for detecting blood using the composition, a kit including the composition, and the use of a surfactant to reduce the time taken to detect blood. A composition for detecting blood includes 3,3', 5, 5'-tetramethylbenzidine, cumene hydroperoxide, and a surfactant. The composition is an aqueous solution. The surfactant is an anionic surfactant or a non-ionic surfactant. The composition is useful for the detection of blood, in particular occult blood in saliva. Also described are methods for detecting blood using the composition, a kit including the composition, and the use of a surfactant to reduce the time taken to detect blood. A photo-curable adhesive composition for display panel assembly comprising a) at least one polyurethane acrylate having Tg value from-70 to 20℃； b) at least one (meth) acrylate monomer； c) at least one chain transfer agent； d) at least two thixotropy agents, wherein first thixotropy agent is selected from the group consisting of hydrophobic fumed silica, hydrophilic fumed silica and mixtures thereof and second thixotropy agent is selected from the group consisting of modified urea, polyhydroxycarboxylic acid esters and mixtures thereof； e) at least one photoinitiator； f) at least one plasticizer； and g) at least one defoamer. The photo-curable adhesive composition can be used in bonding two transparent substrates together or in bonding one transparent substrate and one opaque substrate together. Furthermore, the composition can be used in a process of making an optical assembly.Una composición para detectar sangre que incluye 3,3´,5,5´- tetrametilbencidina, hidroperóxido de cumeno y un tensioactivo. La co
