ftp://ftp.ncbi.nih.gov/pub/HomoloGene

##</code><code>##

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homologene.data is a tab delimited file containing the following
columns:

1) HID (HomoloGene group id)
2) Taxonomy ID
3) Gene ID
4) Gene Symbol
5) Protein gi
6) Protein accession
-----------------------------------------------------------

##</code><code>##

ftp://ftp.ncbi.nih.gov/gene/DATA