Extended Data Fig. 4: ATPase activities in acorn worms (S. kowalevskii), amphioxus (B. floridae) and ammocoetes (E. tridentatus).
From: Ion regulation at gills precedes gas exchange and the origin of vertebrates
Na+/K+-ATPase (a–c; NKA) and V-H+-ATPase (d,e; VHA) activities in multiple tissues of S. kowalevskii (a,d), B. floridae (b,e) and E. tridentatus (c). Data presented as means±sd with individuals superimposed (n = 10 for all tissues except n = 9 for proboscis and hepatic caecum). One-way ANOVA with Tukey’s test (a,b,d) or Kruskal-Wallis with Dunn’s test (c,e), P < 0.05. Letters indicate significant differences between tissues. P < 0.0001 (a–c,e), P = 0.6203 (d).
