Xu, F; Marlétaz, F; Gavriouchkina, D; Liu, X; Sauka-Spengler, T; Zhang, G; Holland, PWH; (2021) Evidence from oyster suggests an ancient role for Pdx in regulating insulin gene expression in animals. Nature Communications , 12 , Article 3117. 10.1038/s41467-021-23216-7 <https://doi.org/10.1038/s41467-021-23216-7>. Green open access