نتایج جستجو برای: photon migration
تعداد نتایج: 210671 فیلتر نتایج به سال:
Photon irradiation has been repeatedly suspected of increasing tumor cell motility and promoting locoregional recurrence of disease. This study was set up to analyse possible mechanisms underlying the potentially radiation-altered motility in medulloblastoma cells. Medulloblastoma cell lines D425 and Med8A were analyzed in migration and adhesion experiments with and without photon and carbon io...
Cancer Stem Cells (CSCs) in Head and Neck Squamous Cell Carcinoma (HNSCC) have extremely aggressive profile (high migratory and invasive potential). These characteristics can explain their resistance to conventional treatment. Efficacy of photon and carbon ion irradiation with addition of cetuximab (5 nM) is studied on clonogenic death, migration and invasion of two HNSCC populations: SQ20B and...
Two-photon microscopy has substantially advanced our understanding of cellular dynamics in the immune system. Cell migration can now be imaged in real time in the living animal. Strikingly, the migration of naive lymphocytes in secondary lymphoid tissue appears predominantly random. It is unclear, however, whether directed migration may escape detection in this random background. Using a combin...
The possibility of the direct encapsulation of living cells via two-photon induced photopolymerization enables the microfabrication of hydrogel scaffolds with high initial cell loadings and intimate matrix-cell contact. While highly efficient water-soluble two-photon initiators based on benzylidene ketone dyes have been developed, they exhibit considerable cyto- and phototoxicity. To address th...
Upon two photon excitation, energy migration from the antenna-localized second singlet excited state to stilbenyl-azopyrrole section allows for efficient indirect excitation and phototransformation of this actuator.
A quantitative comparison between the single source and the dual-interfering sources configurations for the detection of fluorescent heterogeneities embedded in a piecewise highly scattering homogeneous fluorescent background was carried out. The study is based upon simulations using analytical solutions of the frequency domain diffuse photon density waves and practical signal-to-noise ratio co...
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