21.   Gene therapy has come under harsh criticism since September, when a different gene therapy experiment killed an Arizona teen-ager.

22.   He is the first patient die in a gene therapy experiment.

23.   He was the first patient to die in a gene therapy experiment.

24.   King said the subcommittee felt it was possible to increase the safety and oversight of gene therapy experiments, while advancing the science.

25.   Puck said scientists are getting better at gene therapy experiments, but so far patients treated for other disorders still need regular, expensive medication to survive.

26.   The family of a teen-ager who died during a gene therapy experiment last year filed a wrongful death lawsuit Monday against his doctors and the University of Pennsylvania.

27.   The Food and Drug Administration accused a University of Pennsylvania researcher Friday of violating safety regulations in a gene therapy experiment in which a patient died.

28.   The Food and Drug Administration is trying to determine if children dying from cancer might have been accidentally exposed to the AIDS virus in a gene therapy experiment.

29.   The Food and Drug Administration says in a letter that a University of Pennsylvania researcher violated safety regulations in a gene therapy experiment in which a patient died.

30.   The family of a teen-ager who died during a gene therapy experiment last year has settled a wrongful death lawsuit against his doctors and the University of Pennsylvania.