title: Spontaneous thymic lymphomas in the non-obese diabetic/Shi-scid, IL-2R gamma (null) mouse.
abstract: The NOD/Shi-scid, IL-2Rgamma(null) (NOG) mouse is a severely immunodeficient mouse used for the engraftment of human tissues and cells. In this study, 2406 mice (8-62 weeks old, 503 males and 1903 females) were subcutaneously engrafted with human tissues. In 16 mice (12-26 weeks old, 1 male and 15 females), a mass was seen in the anteroventralis of the thorax on gross examination with an incidence of 0.7%. Histologically, the masses were composed of sheets of lymphoblastic cells. A 'starry sky' pattern was observed with numerous mitoses. Immunohistochemically the lymphoblastic cells were positive for Thy 1. The lymphoblastic cells were also seen in the spleen, lung, liver, kidney and heart. The gross and histopathological findings led to the diagnosis of spontaneous thymic lymphoma in NOG mice.
authors.affiliation: PharmaLogicals Research Pte Ltd, 11 Biopolis Way, #05-08/09 Helios, Singapore 138667, Singapore. katoce@chugai-pharm.co.jp
authors.forename: Chie
authors.initials: C
authors.lastname: Kato
authors.forename: Etsuko
authors.initials: E
authors.lastname: Fujii
authors.forename: Yu Jau
authors.initials: YJ
authors.lastname: Chen
authors.forename: Berwini B
authors.initials: BB
authors.lastname: Endaya
authors.forename: Koichi
authors.initials: K
authors.lastname: Matsubara
authors.forename: Masami
authors.initials: M
authors.lastname: Suzuki
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Ohnishi
authors.forename: Norikazu
authors.initials: N
authors.lastname: Tamaoki
mesh_terms: D000818:Animals; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008223:Lymphoma / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D008297:Male; D051379:Mice; D016688:Mice, Inbred NOD; D018345:Mice, Knockout; D016513:Mice, SCID; D013953:Thymus Neoplasms / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D018183:Transplantation Chimera; D014183:Transplantation, Heterologous