http://www.aidsorigins.com/walter-nelson-rees-obituary
Exceprt from above link:
During his years at this laboratory, Walter, aside from his research and authoring and co-authoring numerous publications was active in various capacities in the Tissue Culture Association (now Society for In Vitro Biology); American Association for Advancement of Science; Mammalian Cytology and Somatic Cell Genetics; Pacific Coast Virus Tumor Group; Advisory Committee, American Type Culture Collection; Organizing Committee XIII International Congress on Genetics; Special Virus Cancer Program, National Cancer Institute. He served on editorial boards of: Journal of American Veterinary Medical Association; Journal of the National Cancer Institute; Applied Microbiology; In Vitro, etc. He Served on Ph.D. dissertation and qualifying examination committees for students in Public Health, was appointed as Lecturer in School of Public Health on courses in Experimental Pathology; Advanced Microbiology; Virology and Zoology and participated in Training Grant of Doctoral Program in Infectious Diseases Research, School of Public Health. He was appointed adjunct faculty at the W. Alton Jones Cell Science Center, Lake Placid, New York 1977-78. At the conclusion of his career at the University of California, he retired as a Research Geneticist, the equivalent of Professor in the teaching faculty series. In addition to presentation of research results at professional symposia, annual meetings and conferences, Walter, by invitation, participated at and presented research reports at laboratories in Chicago (Fermi), Brugge, Liege, Pavia, Bethesda, Albuquerque (Sandia), London (Imperial Cancer Research Fund); Porton Downs, England; Glasgow; Paris (College de France); Freiburg University; Oslo (Norsk Institutet); Stockholm; Munich (von Pettenkofer Institute); Heidelberg University; Moscow (five laboratories as guest of Profs. Helen Pogozianz, Viktor Zdanov, B.L. Astaurov) and Academia Nazionale dei Lincei, Rome, Italy. Professional consultations were extended to hundreds of recipients of cell cultures initiated or stored in the Cell Culture Laboratory.
Although his extensive publications dealt especially with chromosomal aspects of cells in culture and cell cross contamination, he is particularly associated with the publication of lists of dozens of cell cultures that were contaminated by HeLa cells, and were no longer what their originators or users thought they represented. He concentrated primarily on altered chromosomes that as a group served as cytological markers for HeLa contamination since these markers were always found in the bona fide HeLa cells. –
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