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.
Descobrimos que a célula que estávamos a tentar transplantar tinha uma nuclease, uma enzima que digere a superfície do ADN e que estava a digerir, toda contente, o ADN que lhe dávamos e portanto nunca conseguíamos a transplantação.