Recording of chromosome banding with the Vickers M85/M86 scanning microdensitometer

An electronic interface is described which permits the Vickers M85/M86 microdensitometer to be used with a chart recorder to plot linear distance along a chromosome against (1) the absorbance, (2) the product of the chromosome width and the mean absorbance transverse to the long axis of the chromosome, or (3) the integrated absorbance accumulating during a two-dimensional scan of the specimen.