Interestingly, in cluster 3 of DEGs between normal + infection group and undernutrition 75% + infection group, hub genes Dnaja1 (0.49-fold change), Hspa1a (0.12-fold change), Hspa1b (0.20-fold change) and Hsph1 (0.35-fold change) were also downregulated in undernutrition 75% + infection group. Here, HSPA1A is linked to infection.