The First Immortalized Human Cell Line
In 1951, Henrietta was diagnosed with cervical cancer at The Johns Hopkins Hospital. While undergoing treatment a sample of her cells was sent to Dr. Gey, a prominent cancer and virus researcher. Dr. Gey had collected cells from many patients with cervical cancer only to find the samples always died however, this wasn't true for Henrietta's cells, which doubled every 24 hours.
Today, These are known as "HeLa" cells (named from the first two letters of her first and last name) and are used to study the effects of toxins, drugs, hormones, and viruses on the growth of cancer cells without experimenting on humans