972 resultados para OPPOSING Z-PLASTY
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Fingerprint nach Ex. der UB Frankfurt
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[... das wünscht Ciriacus Schnauß]
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Jena, Univ., Diss.
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In hebr. Schr., Text hebr.
Die ersten Makamen aus dem Tachkemoni oder Divan des Charisi [Jehūda al-Harīzī] : nebst dessen Vorr.
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nach e. authent. Ms. aus d. Jahre 1281 hrsg., vocalisirt, interpungirt u. in's Deutsche übertr. .. von S. I. Kaempf
Die ersten Makamen aus dem Tachkemoni oder Divan des Charisi [Jehūda al-Harīzī] : nebst dessen Vorr.
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nach e. authent. Ms. aus d. Jahre 1281 hrsg., vocalisirt, interpungirt u. in's Deutsche übertr. .. von S. I. Kaempf
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Signatur des Originals: S 36/F02636
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Signatur des Originals: S 36/F02640
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Sammlung des Herz Zunz
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Aus der Sammlung des Leo Baeck Institute, digitalisiert in Kooperation mit dem Center for Jewish History, NY
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Mathias Bersohn
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Deregulation of apoptotic cell death can result in aberrant accumulation of cells and increased tumor incidence. Fas (CD95) and Fas ligand (FasL) are a receptor-ligand pair whose activation induces apoptosis in many cell types. Previously, we demonstrated that low metastatic, Fas+ K1735-P murine melanoma cells spontaneously metastasize to the lung following orthotopic injection into FasL-deficient (gld) mice compared to wild-type (wt) controls. We further demonstrated that the expression of the Fas antagonist soluble Fas (sFas) directly correlates with disease stage in patients with melanoma, breast, and colon cancer. These findings document a role for host-derived FasL, in the control of metastatic disease and suggest a role for tumor-associated sFas in acquiring metastatic potential. To directly test whether FasL expressed on lymphocytes or on lung stromal cells restricts metastasis, bone marrow chimeras were generated between C3H wt and C3H gld mice. Chimeric animals were injected subcutaneously with 5 × 105 K1735-P and the incidence and number of spontaneous lung metastases scored. The data show that wt mice receiving gld marrow had a greater number of lung metastases (median 9.5, range 2–31) than gld mice reconstituted with wt marrow (median 1, range 0–31; p < 0.016). Interestingly, both groups had fewer metastases compared to gld controls (median 18.5, range 0–46) but more than wt controls (median 2, range 0–7). These observations provide the first evidence that both hematopoietic- and nonhematopoietic-host derived FasL, are important in the control of melanoma metastasis to the lung. To directly test whether tumor-associated sFas expression can enhance metastasis, K1735-P cells were transfected with three isoforms of sFas (Exo4Del, Exo6Del, and Exo3, 4, 6Del). RT-PCR and ELISA analysis confirmed the expression of sFas RNA and protein respectively. Following intravenous injection of 5 × 104 cells, sFas transfected cells formed significantly more experimental lung metastases [Exo6Del clone 3 (median 22, range 0–36), Exo6Del clone 7 (median 31, range 4–50), Exo3, 4, 6Del (median 22.5, range 13–48)] compared to vector control cells (median 6.5, range 3–29). Together, these data provide the first evidence that sFas is sufficient to enhance the metastatic potential of Fas+ melanoma cells. ^