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Double immunostaining for Hsp27 (green, a–d) plus Hsp47 (red, a, b) or Ki67 (red, c, d) in AGE (a, c) and alveolar mucosa (b, d) of adult rats. Arrows indicate the Hsp27-immunonegative basal layer with (a) and without (b) Hsp47-immunoreacitivity, and with Ki67-immunoreactivity (c, d). Bars=20 µm (a–d).
