Fig. 6: Filopodia increase the PG exchange surface at the sub-BM domain.
a Representative images of an eL3 and lL3 PG cell expressing Syt1-GFP. Filopodia are pointed out with arrowheads. b–e Filopodia length increases significantly from eL3 to lL3 (b), while their diameter remains stable (c). The density of filopodia also increases significantly during the L3 stage (d), resulting in a 70% increase in the exchange surface of the sub-BM area (e). Number of clones analyzed: neL3 = 11, nlL3 = 8. Scale bars: 20 μm. Data are presented as median of the means ± IQR in (b, c) and as median ± IQR in (d, e). Data were subjected to the two-tailed Mann-Whitney test (ns not significant, *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001). Source data are provided as a Source Data file.
