On the structures of moss colony in the Yukidori Valley, Langhovde, East Antarctica

The moss vegetation developing in the Yukidori Valley, Langhovde, East Antarctica, was investigated as based on the samples in the vertical cross-section housed as the herbarium specimens to categorize the structure of the moss colony and to determine the specific composition. The vegetation consists of pure colonies of one species, and mixed colonies composed of two or rarely three moss species. Each colony was classified by species composition and degree of unevenness. The active zone, decomposed zone which were seen in the vertical cross-section, and epiphytic condition on the surface such as cyanobacteria and imperfect lichens, and rhizoidal layers in the inside of colony were determined and measured. Furthermore, the relationship between epiphytic condition and the thickness of the pure and mixed colonies was discussed taking account of ecological significances of these structural features

細胞治療とリハビリテーションの相加効果は脳損傷モデルマウスにおいて神経新生を促進する

内容の要約広島大学(Hiroshima University)博士(保健学)Philosophy in Health Sciencedoctora

Role of TRPV3 in immune response to development of dermatitis

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Characterization of bacteria associated with lichens found in cold environment

第6回極域科学シンポジウム分野横断セッション：[IB2] 地球環境変動の解析と地球生命システム学の構築11月19日（木）　統計数理研究所 セミナー室1（D305

Utility of Ethylene-Diamine-Tetraacetic Acid Buffer Solution With Boric Acid for Immunostaining of Specimens Stored for an Extended Period

Antigen modification and denaturation are recognized causes of false negatives in immunostaining. Specimens that have been stored for an extended period at room temperature show decreased immunoreactivity and may mislead the diagnosis. Studies of the molecular targeting of drugs often involve immunostaining of previous samples and, in some situations, only unstained specimens can be used. The present study aimed to develop an effective staining method to recover antigen activation in unstained specimens stored for an extended period by using ethylene-diamine-tetraacetic acid (EDTA) buffer solution with boric acid. We compared several commonly used antigen retrieval solutions and found that Tris-borate-EDTA (TBE) buffer solution with a pH ≥8.3 provided sufficient antigen retrieval. However, pH values higher than 8.3 (9.0, 10.0, and 11.0) frequently caused severe tissue damage. Thus, TBE with pH 8.3 was the most suitable antigen retrieval solution for recovering the antigenicity of specimens stored for an extended period. This procedure may allow useful immunohistochemical information, even from sections that have been stored for an extended period

Unique microbial ecosystems of Antarctica

第6回極域科学シンポジウム[OB] 極域生物圏11月17日（火）　統計数理研究所 セミナー室1（D305

Bryosphere within an Antarctic moss pillar

第6回極域科学シンポジウム分野横断セッション：[IB2] 地球環境変動の解析と地球生命システム学の構築11月19日（木）　統計数理研究所 セミナー室1（D305

Biological investigations of the Antarctic ice sheet: review, problems and projects

The Antarctic Icecap has attracted considerable attention of scientists for many years. Many microbiological and general biological studies of the ground surface, snow and glacial cover have been performed. In recent decades, it has been discovered that the Antarctic ice sheet is a unique depository of paleoclimatic and paleomicrobiological information that reflects previous ecological events on our planet. Thus, dust particles, spores, plant pollen, and different microorganisms, which were brought onto the glacier surface by wind, appear to be gradually buried in the glacier layers and preserved in the frozen state for hundreds thousands years. These investigations have become especially important in the era of space research, many scientists consider the Antarctic as the most appropriate model to solve some methodical problems in astrobiology. Further developments and improvements of drilling methods have made it possible to penetrate into the deepest levels of the Antarctic Icecap, including the lower layers of so-called accretion ice above the sub-glacial Lake Vostok. The initial glaciological and microbiological investigations were mainly focused on the glacier ice and gave very useful information on the history of the Earth\u27s climate and the distribution of dust particles and microorganisms in the ice sheet during different periods. However, studies of the deep accretion ice and the sub-glacial Lake Vostok are expected to provide more insight into relict microbial forms and give rise to new investigations of the Antarctic ice cover. These works should include searches for microbial life in the accretion ice and Lake Vostok, and requires new biological techniques, new multidisciplinary approaches and international cooperation. Nowadays, biological investigations of the Earth\u27s polar regions are of paramount importance in view of current ecological problems. Of no less significance is the search for possible extraterrestrial life, since permafrost and glaciers are widely spread in the Universe; this is why, researchers have paid great attention to the Antarctic as a model for astrobiology