Fig. 4From: Hydra vulgaris exhibits day-night variation in behavior and gene expression levelsCharacterization of diel cycle genes a, b, c, d Oscillation patterns the clusters identified by K-means clustering. The red line indicates the mean intensity of the clustered genes. e, f, g, h GO terms enriched in Cluster I, Cluster II, Cluster III, and Cluster IV. The p-values represent the modified Fischer exact P valuesBack to article page