The virus's harmful genes are stripped out and a therapeutic gene inserted in their place.

Various vectors have been developed to carry the therapeutic genes to cells.

They have the capacity to deliver a large amount of therapeutic genes repeatedly, and it is convenient to produce them on a large scale.

In Gelsinger's case, the goal was to introduce therapeutic genes into his liver cells.

The current commercial techniques for activating therapeutic genes require the continual application of a drug to keep the gene active.

C1 A drug as an on-off switch for therapeutic genes.

This would be followed by insertion of a therapeutic anticancer gene.

Onyx is also studying ways to use the virus to carry therapeutic genes to tumor cells.

Dr. von Kalle's hypothesis is that a second genetic change came from the therapeutic gene itself.

They hope to use it to slip therapeutic genes into people's cells to treat inherited diseases, heart disease and cancer.