Fig. 2
MO-mediated Lpar2b knock-down reduced the number of NMs and hair cells in the posterior lateral line. (A,B) Epifluorescence images of 48 hpf Et(gata2:EGFP)mp189b embryos injected with control or lpar2b MO. (C) Quantification of the number of trunk NMs (exclude terminal NMs) in one side of the pLL in (A,B). (D) Co-injection of MO-insensitive Lpar2b mRNA rescued the NMs phenotype caused by Lpar2b depletion. (E,F) Epifluorescence images of 72 hpf Tg(Brn3c:mGFP) embryos injected with control or lpar2b MO. (E′,F′) High-magnification images of hair cells in the L1 NMs in (E,F). (G) Quantification of the total number of hair cells in one side of the pLL (L1-L5) at 72 hpf. (H) Average number of hair cells per NM (L1-L5) at 72 hpf. (I,J) Snapshots from 6-h epifluorescence time-lapses movies of control or lpar2b MO-injected Tg(-8.0cldnb:lynEGFP) embryos at 30–36 hpf (Supplementary Movies 1, 2). (K) Quantification of the migration speed of the pLLP of (I,J). *p < 0.05; **p < 0.01; #p > 0.05 compared to control.