conducted similar studies with chicken and duck embryos, observing elevated Bmp4 expression in the broad-beaked duck relative to the smaller beaked chicken. The interplay of two signaling factors ...

Using human embryonic stem cells (ES cells), researchers have generated models of early human embryos in the lab that are more complex than any previous lab-generated embryo model, NPR reports.

This study provides a valuable new resource to investigate the molecular basis of the particular features characterizing the pipefish embryo. The authors found both unique and shared gene expression ...