Heteroleptic compounds containing phenylpyridine and phenylbenzimidazole are provided. A case of detecting a binding reaction between an antibody fused with GFP and a sugar on the nanoparticle surface is explained. A flexible sealing section connects the vacuum container wall directly or indirectly to the room temperature part of the cold head. The URI is received by a server that has components to translate the URI into a data structure that defines one or more resources indicated by the URI. At least one layer of the corrosion resistant film is a corrosion resistant film formed from a compound of the group 3 element as the main component and has specific characteristics so that it can improve film property. The introducer can then be bent and rotated to screw the helical electrode into the heart.