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https://www.cam.ac.uk/file/ctvt-oronasal-tumours-animation-credit-emma-werner CTVT Oronasal Tumours Animation Credit Emma Werner | University of Cambridge university of tumours animation credit emma https://www.tcg.vet.cam.ac.uk/about/ctvt Canine transmissible venereal tumour (CTVT) | Transmissible Cancer Group canine tumour cancer group