Table 1 |.

Measured mechanical properties in vertebrates’ embryonic tissues during AP axis formation

Technique	Measured tissue	Measured parameter	Value	Reference
Uniaxial compression	Xenopus dorsal explant	Apparent Young modulus after 180s	20–80 Pa	(Zhou et al. 2009)
Indentation	Chicken brain	Shear modulus	200 Pa	(Xu et al. 2010)
	Xenopus head mesoderm	Apparent bulk modulus	70–130 Pa	(Barriga et al. 2018)
Uniaxial stretch	Xenopus marginal zone	Young modulus	15–20 Pa	(Moore et al. 1995; Shook et al. 2018)
	Chicken midline structures	Young modulus	1.3 kPa	(Agero et al. 2010)
	Chicken gut	Young modulus	1–20 kPa	(Chevalier et al. 2016; Nerurkar et al. 2017)
Aspiration	Chicken heart (HH12)	Young modulus	300 Pa	(Majkut et al. 2013)
	Xenopus gastrula dorsal region	Young modulus	30 Pa	(von Dassow et al. 2010)
	Zebrafish blastoderm	Viscosity	500–1000 Pa.s	(Petridou et al. 2018)
Ferrofluid droplets	Zebrafish posterior zone and PSM	Young modulus	300 – 600 Pa	(Serwane et al. 2016)
		Short-time and long-time viscosities	0.5 – 5 kPa.s