Thanks, that looks legit, especially considering they got a Nobel for the process. Red blood cells wouldn’t work though, no genetic material to tell the cell what to do. Skin cells sure but deeper layers before they ditch their nucleus. The bottom layer of your epidermis is already made of stem cells that continuously produce new keratinocytes (skin cells). That’d make sense as a starting point for what they did. I’ve been in medicine for seven years and there have been all kinds of crazy claims made but researchers so I’m always skeptical.