Abstract: A transmission 1 includes: a casing 2 and rotatable shafts 50, 60, 70. A drive gear of a reversing gear train 24 and a drive gear of a first speed gear train 25 are fixed on the input shaft 50. The gear change mechanism for 1st speed operation is constituted by he fixed 1st gear 25, a rotatable 1st gear 22, and a synchromesh device 20 supported on the intermediate shaft 60. The gear change mechanism for reversing operation is constituted by the fixed reversing gear 24, a rotatable reversing gear 21, and the synchromesh device 20. An idle gear 66 is rotatably supported on an idle shaft 65 that is supported by a wall of housing 511 adjacent to the reversing gear.

Abstract: A method is presented to remove contaminating tumor cells from a cell population. The method includes labeling individual tumor cells in the population and then killing them with a high energy laser beam. The laser is focused so that it specifically kills the identified tumor cell, but not the remaining cells in the population.