Biomedical Optics Express

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10.07.2023

Effect of tissue fixation on the optical properties of structural components assessed by non-linear microscopy imaging

Authors Markus MA, Ferrari DP, Alves F, Ramos-Gomes F Journal Biomedical Optics Express Citation Biomed. Opt. Express 14, 3988-4002 (2023). Abstract Fixation methods such as formalin are commonly used for the preservation of tissue with the aim of keeping their structure as close as possible to the native condition. However,
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25.08.2022

Combined optical fluorescence microscopy and X-ray tomography reveals substructures in cell nuclei in 3D

Authors Wittmeier A, Bernhardt M, Robisch A-L, Cassini C, Osterhoff M, Salditt T, Köster S Journal Biomedical Optics Express Citation Biomed. Opt. Express 13, 4954-4969 (2022) Abstract The function of a biological cell is fundamentally defined by the structural architecture of packaged DNA in the nucleus. Elucidating information about the
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15.11.2021

Three-dimensional virtual histology of the cerebral cortex based on phase-contrast X-ray tomography

Authors Eckermann M, van der Meer F, Cloetens P, Ruhwedel T, Möbius W, Stadelmann C, Salditt T Journal Biomedical Optics Express Citation Biomed. Opt. Express 12, 7582-7598 (2021). Abstract In this work, we optimize the setups and experimental parameters of X-ray phase-contrast computed-tomography for the three-dimensional imaging of the cyto-
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19.10.2021

Label-free imaging of age-related cardiac structural changes in non-human primates using multiphoton nonlinear microscopy

Authors Khan A, Ramos-Gomes F, Markus A, Mietsch M, Hinkel R, Alves F Journal Biomedical Optics Express Citation Biomed. Opt. Express 12, 7009-7023 (2021). Abstract Heart failure is one of the most common causes of morbidity and mortality. Both maturational abnormalities and age-associated cardiac pathologies contribute to heart failure. Imaging-based
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07.05.2021

Rapid multi-plane phase-contrast microscopy reveals torsional dynamics in flagellar motion

Authors Mojiri S, Isbaner S, Mühle S, Jang H, Bae AJ, Gregor I, Golami A, Enderlein J Journal Biomedical Optics Express Citation Biomed. Opt. Express 12, 3169-3180 (2021). Abstract High speed volumetric optical microscopy is an important tool for observing rapid processes in living cells or for real-time tracking of
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19.05.2020

Tomographic STED microscopy

Authors Krüger JR, Keller-Findeisen J, Geisler C, Egner A Journal Biomedical Optics Express Citation Biomed. Opt. Express 11, 3139-3163 (2020). Abstract Stimulated emission depletion (STED) microscopy is a versatile imaging method with diffraction-unlimited resolution. Here, we present a novel STED microscopy variant that achieves either increased resolution at equal laser
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23.03.2020

Elemental quantification and analysis of structural abnormalities in neurons from Parkinson’s-diseased brains by X-ray fluorescence microscopy and diffraction

Authors Joppe K, Nicolas JD, Grünewald TA, Eckermann M, Salditt T, Lingor P Journal Biomedical Optics Express Citation Biomed. Opt. Express. 2020 11(4). Abstract In this work we use scanning X-ray microscopy to study the structure and elemental composition of neuromelanin-positive neurons in substantia nigra tissue of Parkinson patients (PD) and controls.
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18.03.2020

Multi-Scale X-Ray Phase-Contrast Tomography Of Murine Heart Tissue

Authors Reichardt M, Frohn J, Khan A, Alves F, Salditt T Journal Biomedical Optics Express Citation Biomed Opt Express. 2020 May 1; 11(5): 2633–2651. Abstract The spatial organization of cardiac muscle tissue exhibits a complex structure on multiple length scales, from the sarcomeric unit to the whole organ. Here we
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