Fig. 4. Decreased Desmoplakin results in abnormal epidermal morphology, MCC and SSC development. A-B) Histological sections of the epidermis in control (A) and DspMO1 morphants (B). Yellow arrowheads indicate space underlying the epidermis. Scale bars = 45 μm. C-C′) Representative control trunk epidermis labeled with tubulin (C), phalloidin and tubulin (C′). Scale bars = 50 μm. D-D′) Representative DspMO1 trunk epidermis labeled with tubulin (D), phalloidin and tubulin (D′). Scale bars = 50 μm. E) Quantification of the percentage of tubulin positive cells in control compared to DspMO1 morphants. * = statistical significance. F-F′) Representative control trunk epidermis labeled with tubulin (F), phalloidin and tubulin (F′). 2X magnified region of C and C’. Scale bars = 11 μm. G-G′) Representative DspMO1 trunk epidermis labeled with tubulin (G), phalloidin and tubulin (G′). 2X magnified region of D and D’. Scale bar = 11 μm. H) Quantification of the surface area of tubulin positive cells in control compared to DspMO1 morphants. * = statistical significance. I-J′) Sections of two representative control trunk epidermis labeled with tubulin (I,J), phalloidin and tubulin (I′,J′). Scale bars = 22 μm. K-L′) Sections of two representative DspMO1 trunk epidermis labeled with tubulin (J), phalloidin and tubulin (G′). Scale bar = 22 μm. M-M′) Representative control trunk epidermis labeled with PNA (M), PNA and E-cadherin (M′). Scale bar = 50 μm. N-N′) Representative DspMO1 trunk epidermis labeled with PNA (N), PNA and E-cadherin (N). Scale bar = 50 μm. O) Quantification of the percentage of PNA positive cells in control compared to DspMO1 morphants. Blue line represents the mean. * = statistical significance. Abbreviations; PNA-peanut agglutinin, MCC = multiciliated cell, SSC = small secretory cell, OE = outer ectoderm, IE = inner ectoderm.
