| Function | Description |
| hsahomology | Contains data for genes that are homologous to genes in Homo sapiens |
| hsahomologyDATA | Genes that are Homologous to Homo sapiens |
| hsahomologyHGID | A vector containing all the HomoloGeneIDs for Homo sapiens |
| hsahomologyLL2HGID | Mappings between public database ids and NCBI's Internal HomoloGeneIDs for Homo sapiens |
| hsahomologyORGCODE | A data frame for mappings between organism scientific names, NCBI code, and three-letter short names for various organisms |
| hsahomologyQC | Quality control information for hsahomology |