| Function | Description |
| mgu74b | Bioconductor annotation data package |
| mgu74bACCNUM | Map Manufacturer ids to GenBank Accession Numbers |
| mgu74bCHR | Map Manufacturer IDs to Chromosomes |
| mgu74bCHRLENGTHS | A named vector for the length of each of the chromosomes |
| mgu74bCHRLOC | Map Manufacturer IDs to Chromosomal Location |
| mgu74bENZYME | Map Between Manufacturer IDs and Enzyme Commission (EC) Numbers |
| mgu74bENZYME2PROBE | Map Between Enzyme Commission Numbers and Manufacturer Identifiers |
| mgu74bGENENAME | Map Between Manufacturer IDs and Genes |
| mgu74bGO | Map between Manufacturer IDs and Gene Ontology (GO) |
| mgu74bGO2ALLPROBES | Map Between Gene Ontology (GO) Identifiers and all Manufacturer Identifiers |
| mgu74bGO2PROBE | Map Between Gene Ontology (GO) and Manufacturer Identifiers |
| mgu74bLOCUSID | Map between Manufacturer Identifiers and Entrez Gene |
| mgu74bMAP | Map between Manufacturer Identifiers and cytogenetic maps/bands |
| mgu74bORGANISM | The Organism for mgu74b |
| mgu74bPATH | Mappings between probe identifiers and KEGG pathway identifiers |
| mgu74bPATH2PROBE | Map between Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway identifiers and Manufacturer Identifiers |
| mgu74bPFAM | Map Manufacturer IDs to Pfam ID |
| mgu74bPMID | Map between Manufacturer Identifiers and PubMed Identifiers |
| mgu74bPMID2PROBE | Map between PubMed Identifiers and Manufacturer Identifiers |
| mgu74bPROSITE | Map Manufacturer IDs to PROSITE ID |
| mgu74bQC | Quality control information for mgu74b |
| mgu74bREFSEQ | Map between Manufacturer Identifiers and RefSeq Identifiers |
| mgu74bSUMFUNC | Map between Manufacturer Identifiers and Gene Function Summaries |
| mgu74bSYMBOL | Map between Manufacturer Identifiers and Gene Symbols |
| mgu74bUNIGENE | Map between Manufacturer Identifiers and UniGene cluster identifiers |