Conversation so far:
How was Henrietta Lack involved in medical research?
Henrietta Lacks' cancer cells are the source of the HeLa cell line, the first immortalized human cell line and one of the most important cell lines in medical research.
Who did the research on Henrietta Lacks' cells?
George Otto Gey was the first researcher to study Henrietta Lacks's cancerous cells.
What did Georgo Otto Gey discover about Henrietta Lacks' cells?
George Otto Gey discovered that Henrietta Lacks' cells were unique in that they reproduced at a very high rate and could be kept alive longer.
What is the impact of the research on Henrietta Lacks' cells?
Ronald J. Daniels said, “Through her life and her immortal cells, Henrietta Lacks made an immeasurable impact on science and medicine that has touched countless lives around the world”

Question: What are some of the breakthroughs?
Self-contained rewrite: What important medical breaktrhoughs did the reproduction of HeLa cells lead to?