1. A computerized method for linking digitized images of serial sections of a biological tissue sample such that the digitized images of the serial sections are displayed on a computer display that is controlled by a computer, the method comprising: creating a copy of a digitized image of a first serial section, the copy being referred to as the ghost image; positioning the ghost image over a digitized image of a second serial section, the digitized image of the second serial section being visible through the ghost image and being referred to as the underlying image; registering the ghost image to the underlying image; and linking the ghost image and the underlying image such that when manipulations are performed on either the ghost image or the underlying image, the other of the images is similarly manipulated.