Liu, X. ., Yang, W. ., Mu, B. ., Li, S. ., Li, Y. ., Zhou, X. ., … Chen, R. . (2018). Engineering of "Purple Embryo Maize" with a multigene expression system derived from a bidirectional promoter and self-cleaving 2A peptides. Plant Biotechnology Journal. https://doi.org/10.1111/pbi.12883 (Original work published 2018)