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Functional analysis of both PIN1 and TIR1 during somatic embryogenesis. (a) Primary somatic embryos cannot be induced from explants of the pin1 mutant, although a single radicle (Ra) is visible. (b) Mutation in TIR1 results in severely abnormal somatic embryos. Scale bars = 0.4 mm (a) and 1.2 mm (b).
