Previous To the invention of HeLa cells, experts were not able to establish tissue cultures with any reliability or stability. In excess of 6 many years afterwards, this cell line is still alive and being used for health-related investigation. See Eye on Ethics: The Immortal Cell Line of Henrietta Lacks https://www.facebook.com/NewTechFind/posts/pfbid0FDwXLmxi2raDNPcEpRa9jeGJbqTJ9rKxkuvCV6x8ZRC8R3wYhPw7yVXLXMNTF8JFl