ptrhomology             Contains data for genes that are homologous to
                        genes in Pan troglodytes
ptrhomologyDATA         Genes that are Homologous to Pan troglodytes
ptrhomologyHGID         A vector containing all the HomoloGeneIDs for
                        Pan troglodytes
ptrhomologyLL2HGID      Mappings between public database ids and NCBI's
                        Internal HomoloGeneIDs for Pan troglodytes
ptrhomologyORGCODE      A data frame for mappings between organism
                        scientific names, NCBI code, and three-letter
                        short names for various organisms
ptrhomologyQC           Quality control information for ptrhomology
