Abstract: A method of measuring micronucleated erythrocyte populations is disclosed. The method includes contacting a sample containing erythrocyte populations with a fluorescently labeled antibody specific to immature erythrocytes among erythrocyte populations; adding an aqueous permeation reagent to the sample and incubating the formed permeation sample mixture for an incubation time sufficient to allow the permeation reagent to render cellular membrane of the erythrocyte populations permeable to RNase and dye; adding a RNase reagent to degrade RNA and to inhibit further reaction of permeation reagent; adding a fluorescent nucleic acid dye reagent to stain DNA representing micronuclei in the erythrocyte populations; performing light scatter and fluorescence measurements of the final sample mixture on a flow cytometer; differentiating micronucleated erythrocyte populations from other cell types; and reporting the micronucleated erythrocyte populations of the sample.

Abstract: A device for determining the movement of a drive shaft, includes the drive shaft, which is rotated around an axis and that can move along the length of the axis, a multi-pole magnet and a sensor. The sensor or the magnet is rotated by the drive shaft. The magnet presents the sensor with North and South poles that alternate according to the relative angular position of the sensor and the magnet, along the axis. The poles are made from a magnetizable material. The movement of the drive shaft along the axis can be detected according to the detected alternating poles. The invention also relates to a geared motor, a window regulator and a magnet.

Abstract: A device for determining the movement of a drive shaft includes the drive shaft, which is rotated around an axis and that can move along the length of the axis, a multi-pole magnet and a sensor. The sensor or the magnet is rotated by the drive shaft. The magnet presents the sensor with North and South poles that alternate according to the relative angular position the sensor and the magnet along the axis. The poles are made from a magnetizable material. The movement of the drive shaft along the axis can be detected according to the detected alternating poles. The invention also relates to a geared motor, a window regulator and a magnet.