Slack, J M <br/><br/>
Embryology: we have a morphogen!  [electronic resource] 

 -  Nature   
 - 553-4 p.  digital 
<br/><br/> Publication Type: News 
<br/><br/><label>ISSN: </label>0028-0836 
<br/><br/><label>Standard No.: </label>10.1038/327553a0  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Embryonic and Fetal Development--drug effects<br/>Morphogenesis--drug effects<br/>Tretinoin--pharmacology