Epstein was the first person to propose that
Burkitt's lymphoma was a cancer caused by a virus. Upon hearing a lecture given by surgeon
Denis Parsons Burkitt in 1961 about this newly described cancer, Epstein changed his research focus from cancer-causing viruses in chickens to searching for a viral origin of Burkitt's lymphoma. After more than two years of working with tumour cells from Burkitt's patients and subsequently working to isolate a virus from them, the Epstein–Barr virus was finally discovered in February 1964. In a tribute to Epstein in his 100th year, the European Association for Haematopathology noted that his "perseverance, rigorous scientific observations and a bit of serendipity" resulted in the first cell culture in suspension from human lymphocytes. In 1963, a flight from Uganda was supposed to deliver fresh tumour samples into a foggy London. The flight was diverted to Manchester causing a delay in delivery. When the samples finally arrived into London, they seemed useless, containing a cloudy fluid. However, under the microscope the cloudiness was not due to bacteria, as originally thought, but to huge numbers of viable, free-floating lymphoma cells. Thus, the first cell culture of Burkitt lymphoma was achieved, designated EB cells. In 1964, using electron microscopy, Anthony Epstein and his research assistant
Bert Achong discovered viral particles in EB cells, resulting in the seminal paper published in 1964, "Virus particles in cultured lymphoblasts from Burkitt's lymphoma" by Epstein, Achong and Barr. This was the first demonstration of viral particles in a human tumour. == Personal life and death ==