Identification of mononuclear cells infiltrating basal cell carcinomas.

The identification of mononuclear cells extracted from 12 basal cell carcinomas has been carried out by means of various assays such as the E rosette test, FITC anti-Ig conjugates and peroxidase conjugates viewed at an ultrastructural level. The relative quantities of B and T cells have been determined as well as the morphology of the extracted cells. It was found that the T/B ratio is close to that of a delayed-type reaction to tuberculin, suggesting a possible identical immune mechanism, and also that the morphological appearance of some tissue lymphocytes differs from that of circulating lymphocytes due to the presence of both membrane and cytoplasmic Ig.