Experimental Flow (IMAGE) The Hebrew University of Jerusalem Caption Label injected into the zebrafish embryos at the one-cell stage which is incorporated into zygotic mRNA, while pre-existing maternal mRNA remains unlabeled. Bottom: Depiction of different regulatory strategies - selective stability of maternal mRNA or selective transcription of zygotic mRNA. Credit Hebrew University Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.