Abstract: A cell deposition and imaging apparatus comprises: a printing mechanism comprising at least one channel, the at least one channel of the printing mechanism arranged to: receive a sample of a cell-carrying fluid comprising at least one cell-type; and deposit the sample of the cell-carrying fluid onto a target area of a substrate, an imaging system arranged to image the target area; and a transportation system arranged to move the target area between a printing position, in which the target area is located substantially adjacent to the printing mechanism, and an imaging position, in which the target area is located substantially adjacent to the imaging system; wherein the imaging system comprises an imager capable of imaging a region of the substrate wherein the region is smaller than the target area and the imaging system is arranged to image all of the target area by moving the target area relative to the imager.

Abstract: A method of forming an imaging calibration device for a biological material imaging system is provided. A first set of one or more discrete regions is provided upon or within a retaining member. Each said region of the first set comprises a selected tissue stain material, wherein each of the selected tissue stain materials exhibits a predetermined optical response inside a colour-stable region of a chromaticity diagram defined by the ellipse x2/a2+y2/b2=1, where a=0.21, b=0.135, the rotation is ?0.07 rad and the translation is (0.38,0.333). A second set of one or more discrete regions is also provided upon or within the retaining member. The second set is formed of one or more coloured filters having a predetermined optical response outside the colour-stable region.