morphogen (n.), morphogenetic (adj.)

https://doi.org/10.1351/goldbook.10972

Any of various signalling factors in embryonic tissue that influences the movement and organization of cells during morphogenesis by forming a concentration gradient.

Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 781 (https://doi.org/10.1515/pac-2015-1202)