Sonic hedgehog mediates the polarizing activity of the ZPA by Robert D. Riddle and others
= Sonic hedgehog mediates the polarizing activity of the ZPA by Robert D. Riddle and others
{c}
{tag=Work by Robert D. Riddle}
{title2=1993}
<Robert D. Riddle> and coauthors.
https://doi.org/10.1016/0092-8674(93)90626-2
Cited material: Anterior implantation of Sonic-hedgehog-expressing cells.