"Thankfully, the cancer is easier to deal with."
The cancer had a gene that controlled it. It would automatically deactivate outside of the presence of the gu. The gene gave his cells receptors that would detect the gu and immediately trigger an explosive cancerous outgrowth. Thus, the moment the gene was removed, the gene would no longer be triggered, and cells would return to normal.
How else would he be able to use the gu in battle? After all, when he fought with the gu, it was entirely removed from his body to attack his opponent.
He quickly sent a message to the director with his new demand before returning to his isolated meditation. Having solved the problem of the gu and the cancer, he could hope to peacefully metamorphosize his entire body without too much of a problem.
"Once my immune system has thoroughly grown acclimatized to the evosapien stem cells, I can immediately commence with the stem cell replacement process."
