Farrar et al. 35 and Vineetet al. 36, who studiedthe expression of Ae1/Ae3 in oral squamous cell carcinoma, report thatimmunoexpression in the respective antibodies was negative in most cases of mild,moderate, and severe dysplasia, except in severe dysplasia in which 50% of the caseshad a positively colored basal layer. This evidence concerns the gene SLC4A3 and dysplasia.