Photoproduction of Lambda(1405) and Sigma^{0}(1385) on the proton at E_\gamma = 1.5-2.4 GeV

Differential cross sections for $\gamma p \to K^+\Lambda(1405)$ and $\gamma p \to K^+\Sigma^0(1385)$ reactions have been measured in the photon energy range from 1.5 to 2.4 GeV and the angular range of $0.8<\cos(\Theta)<1.0$ for the $K^+$ scattering angle in the center-of-mass system. This data is the first measurement of the $\Lambda(1405)$ photoproduction cross section. The lineshapes of \LamS measured in $\Sigma^+\pi^-$ and $\Sigma^-\pi^+$ decay modes were different with each other, indicating a strong interference of the isospin 0 and 1 terms of the $\Sigma\pi$ scattering amplitudes. The ratios of \LamS production to \SigS production were measured in two photon energy ranges: near the production threshold ($1.5<E_\gamma<2.0$ GeV) and far from it ($2.0 <E_\gamma<2.4$ GeV). The observed ratio decreased in the higher photon energy region, which may suggest different production mechanisms and internal structures for these hyperon resonances

Immunohistological analysis of pancreatic carcinoma after vaccination with survivin 2B peptide: Analysis of an autopsy series.

当教室では本学消化器・総合，乳腺・内分泌外科および東京大学医科学研究所，神奈川県立がんセンターと共同で有効な治療法のない進行膵臓がん患者にサバイビン2Bペプチドワクチンを用いた無作為化二重盲検群間比較試験を行った．本研究では上記の臨床試験参加者に対して施行された病理解剖組織検体を用いて腫瘍微小環境における免疫学的効果の判定を目的として，対照群を含む13例（うち7例がワクチン投与群）の病理解剖検体組織を用いて腫瘍組織局所における各種の免疫細胞浸潤の評価した