<prompt> Pleomorphic adenoma has?Columnar cells enclosing lymphoid stromaExclusively myoepithelial cellsEpithelial cells in chondroid matrixNests of squamous cells vacuolated cells containing mucin  <response>: Mixed tumour of salivary gland pleomorphic adenoma is derived from a single clone either myoepithelial or ductal reserve cell and giving rise to two components, namely epithelial and myoepithelial stromal elements cells Pleomorphic adenoma: Encapsulated but pseudopodia fingerlike projections into the surrounding gland. 