An optical waveguide contains a lower cladding layer, a patterned core layer, an upper cladding layer and an upper low elasticity layer, which are laminated in this order, in which a film formed by curing a resin composition for forming the upper low elasticity layer has a tensile elastic modulus of from 1 to 2,000 MPa at 25\xb0 C. The on-site display apparatus including a calendar event processing unit, a calendar event storage unit, a display controller and a calendar event display device is installed in an area proximate to the conference room. The present invention comprises antibodies directed to such CCR-proteins.