An African-American woman becomes an unwitting pioneer for medical breakthroughs when her cells are used to create the first immortal human cell line in the early 1950s.An African-American woman becomes an unwitting pioneer for medical breakthroughs when her cells are used to create the first immortal human cell line in the early 1950s.An African-American woman becomes an unwitting pioneer for medical breakthroughs when her cells are used to create the first immortal human cell line in the early 1950s.