Figure 1. Experimental setup and principal component analysis (PCA).

A. Experimental setup with numbering of the different conditions. When not stated, the cell density was 10⁷ cells per mL. B. PCA on all conditions labelled by days in culture. C. PCA limited to conditions 1–32 on days 0 and 1. D. PCA limited to conditions 1–32 on days 0 and day 7.