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Immunohistochemical analysis of AQP1 expression in formalin-fixed paraffin-embedded (FFPE) tissue sections of mouse kidney under different storage conditions for 3 months. (a) RT-Vac + Drierite, (b) RT-HC, (c) 4C-Vac + Drierite, (d) 4C–HC, (e) 30C-Vac + Drierite, (f) 30C–HC, (g) 37C-Vac + Drierite, (h) 37C–HC. All photomicrographs ×200. HC, humidity chamber; RT, room temperature; Vac, vacuum packed.
