1.   A high dose of adenovirus carrying a corrective gene was injected into his liver.

2.   A vector is the disabled virus used by gene therapists to insert corrective genes into human cells.

3.   He has projects for delivering corrective genes to the liver, the eye and the lun as well as to muscle cells.

4.   He died after suffering an overwhelming immune reaction to an infusion of corrective genes.

5.   In the six years since the first corrective genes were injected into the first patient, gene therapy has exploded.

6.   Inserting corrective genes into these cells, once they can be identified, could prove more effective than messing with viruses and other provocations to the immune system.

7.   It was his viral delivery technique that allowed the corrective genes to be injected.

8.   The idea of gene therapy is that these illnesses can be cured, or prevented, through an infusion of corrective genes.

9.   The vector is the disabled virus used by gene therapists to insert corrective genes into human cells.

10.   To get corrective genes into cells, gene therapists have to rely on viruses, which specialize in exactly this task.