Fig. 3From: Transcriptome analysis reveals a molecular understanding of nicotinamide and butyrate sodium on meat quality of broilers under high stocking densityPrincipal Component Analysis (PCA) and Wayne (VEEN) analysis of gene sets. For the PCA graph, the distance between each sample point represents the distance of the sample. The closer the distance means higher the similarity between samples; for the VEEN graph, the numbers inside the circle represents the sum of the number of expressed genes in the group. The crossover region represents the number of consensus expressed genes for each groupBack to article page