<prompt> Characteristic feature of basal cell carcinoma isKeratin pearlsFoam cellsNuclear palisadingPsammoma bodies  <response>: The characteristic finding is of ovoid cells in nests with a single palisading layer. It is only the outer layer of cells that actively divide, explaining why tumour growth rates are slower than their cell cycle speed would suggest.Ref: Bailey and Love, 27e, page: 605 