Literature

Authors	Year	Title
Sasaki, M, Endo, H, Wiig, O, Derocher, AE, Tsubota, T, Taru, H, Yamamoto, M, Arishima, K, Hayashi, Y, Kitamura, N, Yamada, J	2005	Adaptation of the hindlimbs for climbing in bears
Tsubota, T, Takahashi, Y, Kanagawa, H	1987	Changes in serum progesterone levels and growth of fetuses in Hokkaido brown bears
Urashima, T, Sumiyoshi, W, Nakamura, T, Arai, I, Saito, T, Komatsu, T, Tsubota, T	1999	Chemical characterization of milk oligosaccharides of the Japanese black bear, Ursus thibetanus japonicus
Tsubota, T, Kanagawa, H, Mano, T, Aoi, T	1990	Corpora albicantia and placental scars in the Hokkaido brown bear
Tsubota, T, Takahashi, Y, Kanagawa, H, Gohda, K	1991	Embryo recovery during delayed implantation in the captive Hokkaido brown bear, Ursus arctos yesoensis
Tsubota, T, Yamamoto, K, Mano, T, Yamanaka, M, Kanagawa, H	1991	Immobilization of the free-ranging Hokkaido brown bear, Ursus arctos yesoensis with ketamine hydrochloride and xylazine hydrochloride
Tsubota, T, Nitta, H, Osawa, Y, Mason, JI, Kita, I, Tiba, T, Bahr, JM	1994	Immunolocalization of steroidogenic enzymes P450scc, 3?HSD, P450c17 and P450arom in the corpus luteum of the Hokkaido brown bear (Ursus arctos yesoensis) in relation to delayed implantation
Tsubota, T, Nitta, H, Osawa, Y, Mason, JI, Kita, I, Tiba, T, Bahr, JM	1993	Immunolocalization of steroidogenic enzymes, P450scc, 3?-HSD, P450c17, and P450arom in the Hokkaido brown bear (Ursus arctos yesoensis) testis
Araki, H, Tsubota, T, Kita, I, Maeda, N, Harada, N, Kominami, S, Mason, JI	1996	Intraovarian immunolocalization of steroidogenic enzymes in a Hokkaido brown bear, Ursus arctos yesoensis during the mating season
Mano, T, Tsubota, T	2002	Reproductive characteristics of brown bears on the Oshima Peninsula, Hokkaido, Japan
Tsubota, T, Kanagawa, H, Yamamoto, K, Mano, T, Yamanaka, M, Kita, I, Tiba, T	1992	Serum progesterone concentrations using P-EIA kit in captive and free-ranging Hokkaido brown bears, Ursus arctos yesoensis