Extended Data Fig. 1. Effects of Matrigel on human gastruloid morphology.
a, Representative images of human gastruloids without (left) vs. with (right) 10% Matrigel. The addition of 10% Matrigel enhances the extent of human gastruloid elongation. b, Boxplot showing the proportion of elongated gastruloids observed in the absence (left) vs. presence (right) of 10% Matrigel across a total of ten experiments. Raw counts are provided in Supplementary Table 1. The addition of 10% Matrigel enhances the robustness of human gastruloid elongation.