Petrifold Regression

Petrifold Regression was a disease that turned the victim's body to stone. When affected by the disease, the victims' skins turned grey and they developed hard lumps on their skin. Movement was slowed down until the victim was immobilised. The Duke of Manhattan suffered from this disease.

The cure for it was found by the Sisters of Plenitude in 5,000,000,023 and by the humans in 5,000,001,023. (TV: New Earth)