The present invention relates to a Lactuca sativa seed designated 79-41 RZ, which may exhibit resistance to downy mildew, currant-lettuce aphid and Lettuce Mosaic Virus, and which may have light green, moderately glossy, deeply-incised, strongly undulated leaves. The GPU analyzes a data string of the intermediate blocks, and generates specifying information for specifying positions of data for which a value is included in a predetermined range in the data string, and for each of the blocks, outputs at least a portion of the data of the intermediate blocks, and corresponding specifying information to a storage apparatus. A scanning device in the capsule optically scans the adjacent tissue on the inside surface of the body lumen as the capsule is moved axially through the body lumen. The piezoelectric device also includes electrical connection means for communicating electrical signals to the piezoelectric rings and a top cover plate that is positioned over the piezoelectric rings and filler rings.