A terminal box of an output part of a solar cell module, including a case and an outer lid that are molded with a thermoplastic resin and an removal cable cover that is of a knockout type and is arranged in the case includes an inner lid that covers to close an electric circuit that is housed in the case. The hinge assemblies hinge the first body on the second body. Methods, compositions, and kits for reverse transcription and RT-PCR are also provided.