On the Dec 15th edition of BBC's programme "Tomorrow's World" there was a short item on the implant of brain cells from a pig foetus to treat PD. The patient, Tony Johnson, has had Parkinson's for 30? years. The experimental treatment was carried out at Lehee?? Hitchcock hospital Boston by Dr James Schumacher and Dr Ole Isacson. Only one side of the brain was treated in case of problems resulting from the implant but a marked improvement in the patient was reported. The operation was carried out last April. Does anybody know more about this research programme?.