dbSNP (https://www.ncbi.nlm.nih.gov/snp)

The database of single nucleotide polymorphisms (SNPs) and multiple small-scale variations that include insertions/deletions, microsatellites, and non-polymorphic variants.

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directory layout

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├── specs                   # dbSNP Design and Schema Specifications 
├── tutorials               # Scripts and tutorials for using dbSNP data
└── README.md