Fig. 2
From: Carbon nanotube biocompatibility in plants is determined by their surface chemistry
PEI-SWNT responding genes are involved in stress responses, immune system, and programmed cell death. A Gene expression heatmap of genes with statistically significant two-fold expression change in at least one of the three treatments, compared to non-infiltrated samples. Clusters 1 and 2 show PEI-SWNT specific up- and down-regulated genes. B, C Gene Set Enrichment Analysis of Cluster 1 and 2 genes using Biological Process Gene Ontology categories (B), and Arapath and PlantGSEA databases (C). Up- or down-regulation genes in the original experiment were used as independent gene sets to calculate their normalized enriched score. Details corresponding to each experiment can be found in Additional file 4: Table S4C