I've just finished reading "The Immortal Life of Henrietta Lacks" by Rebecca Skloot and I'm going to give it 5/5!
It's the true story of a cell culture called HeLa, that they took from this woman for research and to grow in 1956, and it is still grown in labs today! These cells have contributed to almost all the vaccines we use, and treatments for all kinds of diseases. The book follows the author on her journey of getting to know the family, learning about Henrietta, and the history of cell research as well as the history of America concerning racism and poverty.
It's really well written, not the usual sort of thing I read, but I highly recommend it!