Circadian genes, xBmal1 and xNocturnin, modulate the timing and differentiation of somites in Xenopus laevis.
Curran KL, Allen L, Porter BB, Dodge J, Lope C, Willadsen G, Fisher R, Johnson N, Campbell E, VonBergen B, et al. PLoS One. 2014; 9(9):e108266. Epub 2014 Sep 19.