Fig. 5
Cell extension during postnatal alveologenesis. Brightfield still images from P4 PCLS time-lapse video (Supplementary movie 10) at 0 (a, d), 5 (e), 10 (f) and 16 (b, g) hours showing cell extension along an alveolar wall (dashed yellow line in a, b, d–g); yellow ‘a’ indicates airspaces, yellow arrow indicates cell position at 0 h (a, d), red arrow indicates the final cell position (b). Measurement of cell extension during 16 h of time-lapse imaging (c). Enlargement of white boxed areas in a and b show the extending cell (white dashed arrow) during a 16 h video (e–g). Scale bar = 50 µm
