input: The Naga hills have been an area of continued resistance as they had long been isolated from outside cultures. The development of a spirit of nationalism and sense of a common identity are relatively new concepts among the Naga people. According to their traditions, each village is an independent republic; initially, they wanted to be free from all outside domination.  Modern education, together with Christian missions, contributed to the politicization of Naga ethnicity. In 1918, a group of educated Nagas formed Naga Club in 1918. The club wrote to the Simon Commission in 1929 demanding that "Nagas should not be included within the Reformed Scheme of India".  On 14 August 1947, the day before India gained independence from British rule, the Nagas were the first ethnic group from the northeast to declare their territory an independent state, not belonging to the new nation. Angami Zapu Phizo led the initial movement with the Naga National Council (NNC). In the last days of the British Raj, he held talks trying to achieve a sovereign Naga nation. In June 1947, a 9-point agreement was signed which promised to bring the Naga tribes under a single political administrative unit and recognised the Nagas' right to self-determination after 10 years. Disputes arose over the interpretation of the agreement, and many in the NNC opposed it.  Under Phizo, the NNC declared their independence from the British on 14 August 1947, a day before India. In May 1951, the NNC claimed that 99 per cent of the tribal people supported a referendum to secede from India, which was summarily rejected by the government in New Delhi. By 1952, the NNC, composed primarily of Nagaland Nagas, led a guerrilla movement. India responded by crushing it with their armed forces. Phizo escaped from the region through East Pakistan and went into exile to London. He continued to inspire the independence movement from there till his death in 1990.

Answer this question "How was this agreement received by the Naga people?"
output: Disputes arose over the interpretation of the agreement, and many in the NNC opposed it.

Question: 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.

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.

Using a quote from the above article, answer the following question: Is it still used?
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Answer:
Since the 1950s, scientists have grown 20 tons of her cells, and there are almost 11,000 patents