Here are the answers to the questions:

1. What tool was used for pathway enrichment analysis?
The tool used for pathway enrichment analysis was Mummichog.

2. Was a tool version number provided?
No, a tool version number was not provided.

3. What gene set library was queried (eg: GO, KEGG, Reactome or other)?
The gene set library queried was KEGG.

4. Was a background gene list defined for pathway enrichment analysis?
Not described.

5. What statistical test was used for enrichment analysis?
Not described.

6. Was false discovery rate correction used to control the number of false positives in the pathway enrichment analysis?
Not described.