Mawdesley-Thomas L E, Healey P
Science. 1969 Mar 14;163(3872):1200. doi: 10.1126/science.163.3872.1200.
An image analysis computer has been used to count and measure goblet cells in the epithelium of the bronchiolar tree of rats exposed to sulfur dioxide vapor. A technique was developed which enabled a bioassay of the irritant effects of the gas.