Literature

AuthorsYearsort descendingTitle
Tsubota, T, Takahashi, Y, Kanagawa, H1987Changes in serum progesterone levels and growth of fetuses in Hokkaido brown bears
Tsubota, T, Kanagawa, H, Mano, T, Aoi, T1990Corpora albicantia and placental scars in the Hokkaido brown bear
Tsubota, T, Takahashi, Y, Kanagawa, H, Gohda, K1991Embryo recovery during delayed implantation in the captive Hokkaido brown bear, Ursus arctos yesoensis
Tsubota, T, Yamamoto, K, Mano, T, Yamanaka, M, Kanagawa, H1991Immobilization of the free-ranging Hokkaido brown bear, Ursus arctos yesoensis with ketamine hydrochloride and xylazine hydrochloride
Tsubota, T, Kanagawa, H, Yamamoto, K, Mano, T, Yamanaka, M, Kita, I, Tiba, T1992Serum progesterone concentrations using P-EIA kit in captive and free-ranging Hokkaido brown bears, Ursus arctos yesoensis
Tsubota, T, Nitta, H, Osawa, Y, Mason, JI, Kita, I, Tiba, T, Bahr, JM1993Immunolocalization of steroidogenic enzymes, P450scc, 3?-HSD, P450c17, and P450arom in the Hokkaido brown bear (Ursus arctos yesoensis) testis
Tsubota, T, Nitta, H, Osawa, Y, Mason, JI, Kita, I, Tiba, T, Bahr, JM1994Immunolocalization 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
Araki, H, Tsubota, T, Kita, I, Maeda, N, Harada, N, Kominami, S, Mason, JI1996Intraovarian immunolocalization of steroidogenic enzymes in a Hokkaido brown bear, Ursus arctos yesoensis during the mating season
Komatsu, T, Tsubota, T, Yamamoto, Y, Atoji, Y, Suzuki, Y1997Seasonal Changes in the Immunolocalization of Steroidogenic Enzymes in the Testes of the Japanese Black Bear (Ursus thibetanus japonicus)
Komatsu, T, Yamamoto, Y, Atoji, Y, Suzuki, Y, Tsubota, T1997Seasonal changes in subcellular structures of Leydig and Sertoli cells in the Japanese black bear, Ursus thibetanus japonicus
Komatsu, T, Yamamoto, Y, Atoji, Y, Tsubota, T, Suzuki, Y1998Immunohistochemical demonstration of cytoskeletal proteins in the testis of the Japanese black bear, Ursus thibetanus japonicus
Urashima, T, Sumiyoshi, W, Nakamura, T, Arai, I, Saito, T, Komatsu, T, Tsubota, T1999Chemical characterization of milk oligosaccharides of the Japanese black bear, Ursus thibetanus japonicus
Sato, M, Yamamoto, K, Tsubota, T, Kita, I, Kudo, T, Komatsu, T, Hashimoto, Y, Katayama, A, Hazumi, T2000Serum Progesterone and Estradiol-17? Concentrations in Captive and Free-Ranging Adult Female Japanese Black Bears (Ursus thibetanus japonicus)
Kojima, E, Tsuruga, H, Komatsu, T, Murase, T, Tsubota, T, Kita, I2001Characterization of semen collected from beagles and captive Japanese black bears (Ursus thibetanus japonicus)
Sato, M, Tsubota, T, Komatsu, T, Watanabe, G, Taya, K, Murase, T, Kita, I, Kudo, T2001Changes in sex steroids, gonadotropins, prolactin, and inhibin in pregnant and nonpregnant Japanese black bears (Ursus thibetanus japonicus)
Tsubota, T, Taki, S, Nakayama, K, Mason, JI, Kominami, S, Harada, N, Kita, I2001Immunolocalization of steroidogenic enzymes in the corpus luteum and placenta of the Japanese black bear, Ursus thibetanus japonicus, during pregnancy
M. Murayama, I, Matsuura, N, Murayama, Y, Tsubota, T, Iwasaki, T, Kitagawa, H, Ito, S2002Sequence comparison of the dopamine receptor D4 exon III repetitive region in several species of the order Carnivora
Mano, T, Tsubota, T2002Reproductive characteristics of brown bears on the Oshima Peninsula, Hokkaido, Japan
Yamamoto, K, Tsubota, T, Komatsu, T, Katayama, A, Murase, T, Kita, I, Kudo, T2002Sex identification of Japanese black bear, Ursus thibetanus japonicus, by PCR based on amelogenin gene
Okano, T, Murase, T, Tsubota, T2003Spermatogenesis, serum testosterone levels and immunolocalization of steroidogenic enzymes in the wild male Japanese black bear (Ursus thibetanus japonicus)
Okano, T, Murase, T, Tsubota, T2004Electroejaculation and semen cryopreservation of free-ranging Japanese black bears (Ursus thibetanus japonicus)
Urashima, T, Nakamura, T, Teramoto, K, Arai, I, Saito, T, Komatsu, T, Tsubota, T2004Chemical characterization of sialyl oligosaccharides in milk of the Japanese black bear, Ursus thibetanus japonicus
Sasaki, M, Endo, H, Wiig, O, Derocher, AE, Tsubota, T, Taru, H, Yamamoto, M, Arishima, K, Hayashi, Y, Kitamura, N, Yamada, J2005Adaptation of the hindlimbs for climbing in bears
Okano, T, Murase, T, Yayota, C, Komatsu, T, Miyazawa, K, Asano, M, Tsubota, T2006Characteristics of captive Japanese black bears (Ursus thibetanus japonicus) semen collected by electroejaculation with different voltages for stimulation and frozen-thawed under different conditions
Okano, T, Nakamura, S, Komatsu, T, Murase, T, Miyazawa, K, Asano, M, Tsubota, T2006Characteristics of frozen-thawed spermatozoa cryopreserved with different concentrations of glycerol in captive Japanese black bears (Ursus thibetanus japonicus)
Okano, T, Nakamura, S, Nakashita, R, Komatsu, T, Murase, T, Asano, M, Tsubota, T2006Incidence of ovulation without coital stimuli in captive Japanese black bears (Ursus thibetanus japonicus) based on serum progesterone profiles
Weng, Q, Medan, MS, Okano, T, Murase, T, Tsubota, T, Xu, M, Watanabe, G, Taya, K2006Changes in serum inhibin levels and immunolocalization of inhibin/activin subunits during the breeding season in the wild male Japanese black bear (Ursus thibetanus japonicus)
Asano, M, Tsubota, T, Komatsu, T, Katayama, A, Okano, T, Nakamura, S2007Immobilization of Japanese Black Bears (Ursus thibetanus japonicus) with tiletamine hydrochloride and zolazepam hydrochloride
Kubo, M, Uni, S, Agatsuma, T, Nagataki, M, Panciera, R, Tsubota, T, Nakamura, S, Sakai, H, Masegi, T, Yanai, T2008Hepatozoon ursi n. sp. (Apicomplexa: Hepatozoidae) in Japanese black bear (Ursus thibetanus japonicus)
Nakamura, S, Okano, T, Shibata, H, Saito, M, Komatsu, T, Asano, M, Sugiyama, M, Tsubota, T, Suzuki, M2008Relationships among changes of serum leptin concentration, leptin mRNA expression in white adipose tissue (WAT), and WAT fat-cell size in female Japanese black bears (Ursus thibetanus japonicus)
Tsubota, T, Sato, M, Okano, T, Nakamura, S, Asano, M, Komatsu, T, Shibata, H, Saito, M2008Annual changes in serum leptin concentration in the adult female Japanese black bear (Ursus thibetanus japonicus)
Iibuchi, R, Nakano, N, Nakamura, N, Urashima, T, Shimozuru, M, Murase, T, Tsubota, T2009Change in body weight of mothers and neonates and in milk composition during denning period in captive Japanese black bears (Ursus thibetanus japonicus)
Kubo, M, Okano, T, Ito, K, Tsubota, T, Sakai, H, Yanai, T2009Muscular sarcocystosis in wild carnivores in Honshu, Japan
Nakamura, S, Nishii, N, Yamanaka, A, Kitagawa, H, Asano, M, Tsubota, T, Suzuki, M2009Leptin receptor (Ob-R) expression in the ovary and uterus of the wild Japanese black bear (Ursus thibetanus Japonicus)
Okano, T, Murase, T, Nakamura, S, Komatsu, T, Tsubota, T, Asano, M2009Normal sperm morphology and changes of semen characteristics and abnormal morphological spermatozoa among Peri-mating seasons in captive Japanese black bears (Ursus thibetanus japonicus)
Iibuchi, R, Kamine, A, Shimozuru, M, Nio-Kobayashi, J, Watanabe, G, Taya, K, Tsubota, T2010Changes in plasma gonadotropins, inhibin and testosterone concentrations and testicular gonadotropin receptor mRNA expression during testicular active, regressive and recrudescent phase in the captive Japanese black bear (Ursus thibetanus japonicus)
Iibuchi, R, Shimozuru, M, Kamine, A, Nio-Kobayashi, J, Iwanaga, T, Tsubota, T2010Localization of five steroidogenic enzyme mRNAs in Japanese black bear (Ursus thibetanus japonicus) testes during the mating season by in situ hybridization
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith