The invention relates to antibodies directed against human Leukemia Inhibitory Factor and to a hybridoma cell line producing said antibodies. The apparatus includes an adjustment mechanism for adjusting a phase angle between first and second crankshafts. The bypass channel has a capillary dimension in at least one direction. The operations of the temporarily deactivated ASIC block may be substituted for by appropriately programmed programmable logic. The modified triangle ordering mechanism can significantly reduce potential performance degradation due to false waiting.