Fig. 4From: Editing of the urease gene by CRISPR-Cas in the diatom Thalassiosira pseudonana Mean cell size (µm) measured at the end of exponential phase for WT and mutant cultures across two growth experiments (1, 2). Cells were grown with nitrate (dark grey) or urea (light grey) as the sole nitrogen source. Cell size was compared using analysis of variance with Tukey’s pairwise comparisonsBack to article page