De Bersaques J
J Cutan Pathol. 1975;2(4):198-202. doi: 10.1111/j.1600-0560.1975.tb00163.x.
The activities of five enzymes were determined by fluorometric micromethods in epidermal tumors (basal and squamous cell epithelioma, verruca seborrhoica and keratocanthoma) and compared to the activities in the adjoining, apparently normal epidermis. Most activities were higher in the tumoral tissues.