Table 2 |.

measured stress production in vertebrates’ embryonic tissues during AP axis formation

Technique	Measured tissue	Measured parameter	Value	Reference
Oil drop	Mouse dental mesenchyme	Anisotropic component of normal stress	1 kPa	(Campàs et al. 2014)
Gel drop	Zebrafish early blastula	Normal and shear compressive stress change	50–800 Pa	(Mohagheghian et al. 2018)
Tissue embedded in gel	Xenopus dorsal explant	Extension stress	5 Pa	(Zhou et al. 2015)
Cantilever	Xenopus marginal zone	Traction maximum force	1–4 μN	(Shook et al. 2018)