dorsal closure, elongation of leading edge cells
The change in shape of cells at the dorsal-most (leading) edge of the epidermis from being polygonal to being elongated in the dorsal/ventral axis.
GO:0009826
unidimensional cell growth
is_a
GO:0016476
regulation of embryonic cell shape
is_a
GO:0048598
embryonic morphogenesis
is_a
GO:0007392
initiation of dorsal closure
part_of