Problem: Background: Propagandhi is a Canadian punk rock band formed in Portage la Prairie, Manitoba in 1986 by guitarist Chris Hannah and drummer Jord Samolesky. The band is currently located in Winnipeg, Manitoba and completed by bassist Todd Kowalski and guitarist Sulynn Hago. While their earlier work was aligned with the punk rock and skate punk tradition, in later years Propagandhi records have moved towards a heavier and more technical heavy metal-influenced sound. Both in their lyrics and hands-on activism, the band's members champion various left wing and anarchist causes and veganism, and have taken a vocal stance against human rights violations, sexism, racism, nationalism, homophobia, imperialism, capitalism and organized religion.
Context: Propagandhi released the album Potemkin City Limits on October 18, 2005. Like its predecessor, the album features multimedia content, with a number of PDF files on topics such as participatory economics and veganism, and links to websites of organizations that Propagandhi support. The album's opening track, "A Speculative Fiction", won the 2006 SOCAN Songwriting Prize by online vote. Propagandhi pledged to use the $5000 prize to make donations to the Haiti Action Network and The Welcome Place, an organization in Winnipeg for which they'd previously done volunteer work which helps refugees start new lives in Manitoba.  Hannah briefly adopted the pseudonym Glen Lambert in the run-up to and immediate aftermath of the release of Potemkin City Limits, causing confusion among some fans, reviewers, and commentators; the band concluded the prank by announcing on 14 August 2006 that Glen Lambert had been dismissed and would be replaced by "former" member Chris Hannah. This coincided with the addition of second guitarist David Guillas, marking the band's first four-piece lineup in their then-twenty year career. Guillas, nicknamed "The Beaver", was a former member of two Winnipeg-based rock outfits, Giant Sons and Rough Music. Hannah had previously stated that he had been a fan of, and influenced by, Guillas' work in Giant Sons.  In 2007, the band released a DVD entitled Live from Occupied Territory, which features a recording of their set at The Zoo in Winnipeg on July 19, 2003. Proceeds of the DVD benefit the Grassy Narrows blockade and the Middle East Children's Alliance. Included on the DVD are two full-length documentaries: Peace, Propaganda and the Promised Land, and As Long as the Rivers Flow.
Question: what were their top hits?
Answer: In 2007, the band released a DVD entitled Live from Occupied Territory,

Background: Henrietta Lacks (born Loretta Pleasant; August 1, 1920 - October 4, 1951) was an African-American woman whose cancer cells are the source of the HeLa cell line, the first immortalized cell line and one of the most important cell lines in medical research. An immortalized cell line will reproduce indefinitely under specific conditions, and the HeLa cell line continues to be a source of invaluable medical data to the present day. Lacks was the unwitting source of these cells from a tumor biopsied during treatment for cervical cancer at Johns Hopkins Hospital in Baltimore, Maryland, U.S., in 1951. These cells were then cultured by George Otto Gey who created the cell line known as HeLa, which is still used for medical research.
Context: George Otto Gey, the first researcher to study Lacks's cancerous cells, observed that her cells were unique in that they reproduced at a very high rate and could be kept alive long enough to allow more in-depth examination. Until then, cells cultured for laboratory studies survived for only a few days at most, which wasn't long enough to perform a variety of different tests on the same sample. Lacks's cells were the first to be observed that could be divided multiple times without dying, which is why they became known as "immortal." After Lacks' death, Gey had Mary Kubicek, his lab assistant, took further HeLa samples while Henrietta's body was at Johns Hopkins' autopsy facility. The roller-tube technique was the method used to culture the cells obtained from the samples that Kubicek collected. Gey was able to start a cell line from Lacks's sample by isolating one specific cell and repeatedly dividing it, meaning that the same cell could then be used for conducting many experiments. They became known as HeLa cells, because Gey's standard method for labeling samples was to use the first two letters of the patient's first and last names.  The ability to rapidly reproduce HeLa cells in a laboratory setting has led to many important breakthroughs in biomedical research. For example, by 1954, Jonas Salk was using HeLa cells in his research to develop the polio vaccine. To test his new vaccine, the cells were mass-produced in the first-ever cell production factory. Additionally, Chester M. Southam, a leading virologist, injected HeLa cells into cancer patients, prison inmates, and healthy individuals in order to observe whether cancer could be transmitted as well as to examine if one could become immune to cancer by developing an acquired immune response.  HeLa cells were in high demand and put into mass production. They were mailed to scientists around the globe for "research into cancer, AIDS, the effects of radiation and toxic substances, gene mapping, and countless other scientific pursuits". HeLa cells were the first human cells successfully cloned in 1955, and have since been used to test human sensitivity to tape, glue, cosmetics, and many other products. Since the 1950s, scientists have grown 20 tons of her cells, and there are almost 11,000 patents involving HeLa cells.  In the early 1970s, a large portion of other cell cultures became contaminated by HeLa cells. As a result, members of Henrietta Lacks's family received solicitations for blood samples from researchers hoping to learn about the family's genetics in order to differentiate between HeLa cells and other cell lines.  Alarmed and confused, several family members began questioning why they were receiving so many telephone calls requesting blood samples. In 1975, the family also learned through a chance dinner-party conversation that material originating in Henrietta Lacks was continuing to be used for medical research. The family had never discussed Henrietta's illness and death among themselves in the intervening years but with the increased curiosity about their mother and her genetics, they now began to ask questions.
Question: How was Lacks involved in medical research?
Answer:
Lacks's cancerous cells, observed that her cells were unique in that they reproduced at a very high rate and could be kept alive long enough to allow more in-depth examination.