For the morphometric analysis of vasculature, sections from spleens and bone marrow from WT and Ats1-KO mice were subjected to immunofluorescence staining with a monoclonal rat anti-mouse Endomucin antibody (SC-65495, SCBT). Images were captured with the AxioImager A1 microscope (Zeiss), and converted to binary for further analysis with Image J software as indicated9 (link). For additional immunofluorescence determinations, sections were incubated with the following antibodies: polyclonal rabbit CD31 (AB28364, Abcam), polyclonal goat Nid1 (AF2570, R&D), polyclonal rabbit anti-mouse Versican V1 (2701534, Millipore), polyclonal rabbit anti-mouse Versican DPE (Versikine) (Ab19345, Abcam). Fluorescence confocal images were captured with a LSM 710 confocal microscope (Zeiss).
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