| Function | Description |
| celhomology | Contains data for genes that are homologous to genes in Caenorhabditis elegans |
| celhomologyDATA | Genes that are Homologous to Caenorhabditis elegans |
| celhomologyHGID | A vector containing all the HomoloGeneIDs for Caenorhabditis elegans |
| celhomologyLL2HGID | Mappings between public database ids and NCBI's Internal HomoloGeneIDs for Caenorhabditis elegans |
| celhomologyORGCODE | A data frame for mappings between organism scientific names, NCBI code, and three-letter short names for various organisms |
| celhomologyQC | Quality control information for celhomology |