Prior to the invention of HeLa cells, experts were unable to establish tissue cultures with any trustworthiness or steadiness. A lot more than six decades later on, this cell line continues to be alive and currently being used for professional medical research. See Eye on Ethics: The Immortal Cell Line https://www.facebook.com/NewTechFind/posts/pfbid02zCSaBojkwdPZirmCzYHUpC1qYLYUg5nDbzAqQhhS36KmY1Vq5NYrmaTsxfHWLSial