As may occur in chemotherapy, deuterium-poisoned mammals die of a failure of bone marrow (producing bleeding and infections) and of intestinal-barrier functions (producing diarrhea and loss of fluids).
Hey, there was an article a little while ago about some fans who were using AI to upscale the old episodes. Either those fans or people like them succeeded in their task and you can find their work freely available if you know where to look.
