(A) Development signature of cultures, organized by batch. Solid curves indicate spontaneous mode and dashed curves indicate stimulated mode. Colors indicate batch number: Batch 1 (purple), Batch 2 (red), Batch 3 (orange), Batch 4 (light green), Batch 5 (grey), Batch 6 (blue), Batch 7 (pink), and Batch 8 (dark green). Several cultures, including all cultures of batch 1, exhibit a common sigmoidal development. (B) PCA biplot showing 52 spontaneous (circles) and stimulated (crosses) cultures. The dotted ellipse denotes cultures exhibiting a common sigmoidal development.