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Fig. 4. SEM of nectary glands from gain- and loss-of-function alleles of LFY and UFO. (A, B) lfy-6, (C) ufo-2, (D) 35S::LFY, (E) 35S::UFO, (F) lfy-6 35S::AP3 35S::PI (35S::"B"), (G) lfy-6 ufo-2 35S::AP3 35S::PI. st, stamen; pe, petal, r, nectary ridge; arrows, nectary glands. Scale bars, 100 µm.