Jim Marshall (not a doctor) said ... When hormone therapy (ADT) is no longer enough to control a man's disease, a stronger drug is added to his treatment.   Doctors may choose: a super-hormone like Zytiga (abiraterone) or Xtandi (enzalutamide); or a chemotherapy drug like Taxotere (docetaxel)   But which will give the longest survival? Before starting treatment, these researchers: took blood samples. separated cancer cells that were in the