english: Number one, there is such a thing as a skeletal stem cell -- a skeletal stem cell that builds up the entire vertebrate skeleton, bone, cartilage and the fibrous elements of skeleton, just like there's a stem cell in blood, just like there's a stem cell in the nervous system.
non_english: Prvá bola, že existuje  kostná kmeňová bunka, ktorá vytvára celú kostru stavovcov,  kosti, chrupku a vláknitú zložku, rovnako ako existuje kmeňová bunka  v krvi a v nervovej sústave.