There’s a recent one I heard on radiolab podcast. In Chinese medicine there’s this concept of Chi that ebbs and flows throughout all of our body and our organs.
Western science dismissed it for a long time, but we were dumbfounded when a cancer would start somewhere, say the liver and then suddenly start appearing elsewhere like the brain, without harming anything in between.
Well, it turns out, our cell drying process for preparing slides for examination was crushing this tiny little matrix of tubes… that connects everything together. It’s working its way through the scientific process to be considered a new organ.