It turned out the cell that we were trying to transplant into had a nuclease, an enzyme that chews up DNA on its surface, and was happy to eat the synthetic DNA that we gave it and never got transplantations.
Resultó que la célula a la que estábamos intentando trasplantar poseía una nucleasa, un enzima que mastica el ADN en su superficie y que estaba feliz de comer el ADN sintético que le dimos y nunca recibía trasplantes.