The present invention relates to a method of treating a neoplastic condition in a mammal. More particularly, the present invention is directed to a method of treating solid tumours, such as primary tumours, secondary tumours, and metastatic tumours. The method of the present invention is predicated on down-regulating the growth of neoplastic cells by administering stem cells or a population of multilineage progenitor cells (MLPC) which have been generated in vitro.
