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141.
Togi S Ikeda O Kamitani S Nakasuji M Sekine Y Muromoto R Nanbo A Oritani K Kawai T Akira S Matsuda T 《The Journal of biological chemistry》2011,286(21):19170-19177
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Two experiments were carried out in order to clarify the color perception of Japanese wild boarsSus scrofa leucomystax. Two females were trained using an operant conditioning technique to press a switch under a positive stimulus color card
in order to receive food as a reward. In Exp. 1, they were tested for discrimination between 3 colors (red, green and blue)
and gray. The luminosity of all colors was the same. The wild boars succeeded in discrimination tests between blue and gray,
but failed to discriminate red from gray. They also did not discriminate green from gray so clearly as blue from gray. In
Exp. 2, the same wild boars were tested to discriminate between 8 kinds of color, which were created by gradating green yellow
into red purple except for the 3 colors used in Exp. 1, and gray. They could clearly discriminate blue, purple blue and a
part of purple from gray. In these experiments, wild boars were capable of recognizing bluish colors. However, for colors
approaching green or yellow, they failed the test by degrees. 相似文献
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Summary A family with five induced and seven spontaneous abortions and no live births is described. Four of the seven spontaneous abortuses were available for cytogenetic examination and three were successfully karyotyped. Their karyotypes were 46,XX; 46,XX/46,XX,t(2;2)(2p2p;2q2q); and 46,XY. The karyotypes of the parents were normal. The origin of the 2p/2p and 2p/2p translocation in one of the abortuses was assigned to an interhomologous whole-arm translocation in an early mitotic division in a conceptus with a 46,XX karyotype. 相似文献
147.
Seishiro Aoki Tetsuya Kondo Danielle Prévost Sayuri Nakata Tadashi Kajita Motomi Ito 《Systematic and applied microbiology》2010
Sixty-one rhizobial strains from Lathyrus japonicus nodules growing on the seashore in Japan were characterized and compared to two strains from Canada. The PCR-based method was used to identify test strains with novel taxonomic markers that were designed to discriminate between all known Lathyrus rhizobia. Three genomic groups (I, II, and III) were finally identified using RAPD, RFLP, and phylogenetic analyses. Strains in genomic group I (related to Rhizobium leguminosarum) were divided into two subgroups (Ia and Ib) and subgroup Ia was related to biovar viciae. Strains in subgroup Ib, which were all isolated from Japanese sea pea, belonged to a distinct group from other rhizobial groups in the recA phylogeny and PCR-based grouping, and were more tolerant to salt than the isolate from an inland legume. Test strains in genomic groups II and III belonged to a single clade with the reference strains of R. pisi, R. etli, and R. phaseoli in the 16S rRNA phylogeny. The PCR-based method and phylogenetic analysis of recA revealed that genomic group II was related to R. pisi. The analyses also showed that genomic group III harbored a mixed chromosomal sequence of different genomic groups, suggesting a recent horizontal gene transfer between diverse rhizobia. Although two Canadian strains belonged to subgroup Ia, molecular and physiological analyses showed the divergence between Canadian and Japanese strains. Phylogenetic analysis of nod genes divided the rhizobial strains into several groups that reflected the host range of rhizobia. Symbiosis between dispersing legumes and rhizobia at seashore is discussed. 相似文献
148.
Masanobu Hibi Satoshi Hachimura Wataru Ise Ayuko Sato Tadashi Yoshida Tsuyoshi Takayama Kastumi Sasaki Takashi Senga Shuichi Hashizume Mamoru Totsuka Shuichi Kaminogawa 《Cytotechnology》2003,43(1-3):49-55
Dendritic cells (DCs) as antigen presenting cells can stimulate naive CD4+ T cells and initiate the primary immune response which controls Th1/Th2 development. It has been suggested that DCs derived from different tissues have distinct properties. We investigated whether DCs from mesenteric lymph nodes (MLN), Peyer's patches (PP) and spleen (SPL) could induce different responses of naive CD4+ T cells to varying doses of antigen by using a co-culture system of DCs and T cells. DCs from each tissue induced IL-4 secretion from naive CD4+T cells in the presence of low dose antigenic peptide, and induced IFN-γ production at high doses of antigen. When purified CD11c+/B220? DCs were used, MLN-derived DCs induced a higher amount of IFN-γ secretion from naive CD4+ T cells, compared with SPL-derived DCs. We could not detect large differences in the expressions of costimulatory molecules on the surface of these two populations of DCs. On the other hand, we found that large amounts of IL-12 were secreted from MLN DCs in an antigen dose-dependent fashion. In conclusion, DCs from SPL, MLN and PP can induce the production of both IL-4 and IFN-γ from naive CD4+ T cells, depending on antigen dose. MLN-derived CD11c+/B220? DCs induce higher IFN-γ production from naive CD4+ T cells than SPL-derived DCs, through efficient IL-12 secretion. 相似文献
149.
Abnormal spermatogenesis and male infertility in testicular zinc finger protein Zfp318‐knockout mice
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150.
Kazuhiro Haraguchi Shigeru Saito Hiromichi Tanaka Tadashi Miyasaka 《Nucleosides, nucleotides & nucleic acids》2013,32(2-4):483-493
Abstract Pummerer-type rearrangement of uracil nucleosides having a phenylseleno group in the 2′-, 3′-, and 5′-positions took place upon oxidation with MCPBA in CH2Cl2 followed by treatment with acid anhydrides to yield α-acyloxyselenides. 相似文献