Functional classification of the DEGs obtained from the comparison of WT and NOS1^−/− macrophages stimulated with LPS for 2 (A) and 8 h (B).

According to a GO analysis, unigenes with BLAST hits were classified into three categories: “Biological Process,” “Molecular Function,” and “Cellular Component.” The Y-axis represents the number of enriched DEGs in each subcategory. The X-axis indicates the most enriched GO terms with the number of enriched genes above 10 and 20 in A and B respectively.