A doctor friend my went to children's hospital to treat one small patient of a serious renal problem. It did the history to her, one saw her and gave to her Pulsatilla. The girl reacted spectacularly, the internal doctors did not believe it so they called my friend to speak with him on the treatment that had applied the girl to him. My friend homeopath explained to them a bit on the homeopathy and said to them that had given him Pulsatilla. On the following day, the doctors gave Pulsatilla to all the children with renal problems. The children, naturally did not react. This series of experiments la majority of the times are not valid, because they divide from allopathic concepts, without having in one counts the individuality and his results are used to discredit to the homeopathy.