Fig. 3From: Transcriptome analysis reveals potential mechanisms underlying differential heart development in fast- and slow-growing broilers under heat stressPrincipal component analysis (PCA) plot generated in DEseq2 showing variation within and between groups. Horizontal and vertical axis show two principal components that explain the greatest proportion (20 and 13%) of variation in variance-stabilized normalized counts. The solid and dash diagonal line respectively set a general division between treatments and lines respectively. Only Ross broilers in two treatment groups cluster separately. Different groups are represented in different shapes and colors: Ross (triangle), Illinois (circle), Heat stress (red), Thermoneutral (blue)Back to article page