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Fig. 5
lamb1a is required for juvenile fin growth but not body growth.
(A) Juvenile sde1 animals, after incubation from 4 to 6 weeks post-fertilization (wpf) at 33°C, acquire degraded fins. Scale bars, 2 mm. (B) sde1 mutations have minimal impact on juvenile outgrowth. Body length was measured from the tip of the snout to the base of caudal fin. (C) RT-qPCR analysis indicates that both lamb1a and lamb1b are induced in fin tissue during juvenile outgrowth. qPCR results were normalized to rpl13a and to the basal expression of lamb1a/lamb1b in adult uninjured fins (n = 4; mean ± SEM). (D) Antibody staining for Laminin expression in juvenile fins. Laminin protein in longitudinal sections of fins is localized to the basal side of the epitheilum in sde1/+ animals, but becomes mislocalized in sde1 mutants.