Microscopy from Scientific Research

Schematic of parasegment formation and cell proliferation in the trunk ectodermal germband. In a (left), A and P denote the anterior and posterior directions, whereas D and V denote the dorsal and ventral directions, respectively. The head ectoderm and trunk ectoderm are demarcated and the ventral midline is highlighted, too. Also, a (right) shows the spatial distribution of cell populations delineated by the number of divisions after parasegment formation once parasegments are assembled from the pool of unorganized ectoderm at the posterior pole. The cyan lines demarcate the parasegment boundaries.

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