An abnormality diagnosis apparatus for performing a leak check of an evaporative fuel processing system which includes a fuel tank, a canister for storing evaporative fuel generated in the fuel tank, a purging passage for connecting the canister to an intake system of an internal combustion engine, and a purge control valve provided in the purging passage. Also described herein are methods that can be used to screen candidate bioactive agents for the ability to modulate breast cancer. Thus the conveyor engages the sheet only in the region of the comb gaps and easily withdraws the sheet without pressing it into contact against the folding blade. The user may also input keywords for use in searching for preferred video content so as to establish a mix of video content concatenated into a single mix channel for use in viewing only those video content items associated with the keywords supplied by the user. A padded punching bag is resiliently fixed to the base.