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PLL::GUS expression in germinating seeds and during lateral root initiation. (A) PLL22 activity at the micropylar (m) end of germinating seeds, during endosperm rupture and preceding radicle emergence. (B) PLL::GUS activity in the region of emerging lateral roots of 12-d-old plants. Arrowheads indicate epidermis (ep), cortex (c) endodermis (en), and pericycle (p) layers.
