The invention provides a bioassay for detection of Mycobacterium tuberculosis infection comprising artificially modified peptide subsequences of the T-cell epitope from M. A sensor output from the rotation detecting sensor 4 is digitalized by a digitalizing unit 101 and is subsequently transmitted wireless by a transmitting unit 105. The first and second outlets of the heater device supply air through the first and second air conduits to the first and second regions of the said vehicle. A plurality of rotatable handles is coupled to the base. The potential Vave is applied to sense amplifiers SAn\u22121 and SAn as a reference potential. A piston is provided having a circumferential groove and a biasing element is disposed between the internal and circumferential groove.