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Book Probes 'Immortal Life Of Henrietta Lacks' Henrietta Lacks, a poor African-American woman and mother of five, never knew that she revolutionized medicine. Shortly before she died of cancer in 1951, doctors took a tissue sample from her — without her permission. Those cells became the first human cells to gain "immortality" — replicating themselves in laboratories long after Henrietta Lacks died. Host Guy Raz talks to science journalist Rebecca Skloot about her new book, The Immortal Life of Henrietta Lacks. All Things Considered Play