Henrietta Lacks (1920–1951) was a Black tobacco farmer from Clover, Virginia, who had moved to Baltimore in the 1940s with her husband Day. She was 31 in January 1951 when she sought treatment at Johns Hopkins Hospital — substantively the only major hospital in the segregated Baltimore region that would treat Black patients — for severe abdominal pain. The diagnosis was advanced cervical cancer. She died ten months later, on 4 October 1951.

During one of the substantial radiation-treatment sessions before her death, the substantial Johns Hopkins surgeon Howard Jones took two small tissue samples — one from the substantial tumour, one from healthy adjacent tissue — without Henrietta’s knowledge or consent. The samples were sent to the Johns Hopkins tissue-culture laboratory of George Gey.

What Gey discovered

Gey had been trying for years to produce a human cell line that would grow continuously in laboratory culture. Every previous attempt had failed: human cells from any donor died within days. The Henrietta Lacks tumour cells did not die. They divided every 24 hours and continued dividing indefinitely. They were the first immortal human cell line.

Gey labelled the samples HeLa (from the first two letters of Henrietta Lacks) and began distributing them substantively for free to any biomedical researcher who requested them. Within five years HeLa cells were in laboratories on every continent except Antarctica. By 2020 the cumulative mass of HeLa cells produced in laboratories worldwide had exceeded 50 million metric tonnes.

What HeLa cells did

HeLa cells were used to develop the Salk polio vaccine (Jonas Salk’s 1954 test programme had distributed HeLa-derived cell cultures to polio-virus laboratories worldwide), the 1980s HIV research framework, the human-papillomavirus cervical-cancer vaccine, the 1996 first cloning of mammalian cells, the mid-20th-century chromosome-counting work that established that humans have 46 chromosomes (not 48, as had been believed since 1923), and substantively the majority of significant 20th-century biomedical-research breakthroughs.

The Lacks family was not told. Henrietta’s husband and her five children did not learn of the cell line’s existence until 1973 — twenty-two years after her death — when a Johns Hopkins researcher contacted them to request blood samples for genetic comparison work.

The reckoning

The subsequent forty years produced extensive ethical, legal, and political controversy. The Lacks family received no compensation, no royalty, no formal acknowledgement through the entire period during which HeLa cells were producing commercial-pharmaceutical revenue for thousands of biotech firms. The 2010 publication of Rebecca Skloot’s book The Immortal Life of Henrietta Lacks brought the case into mainstream American consciousness.

The 2013 NIH agreement with the Lacks family substantively established a formal consultation framework: Lacks family representatives now sit on the NIH committee that controls research access to the HeLa genome data. The 2023 family settlement with the pharmaceutical company Thermo Fisher Scientific produced the first significant financial compensation.

Henrietta Lacks’s cells are still alive. The cumulative scientific value of her tissue exceeds that of any human in history. She has been dead for seventy-five years.