GENERAL Contact Us dbSNP Homepage SNP Science Primer Announcements dbSNP Summary FTP Download Server Getting Started Build History Handle Request DOCUMENTATION FAQ dbSNP Handbook Overview How to Submit RefSNP Summary Info Schema Database PDF Changes Genotype Data Formats Heterozygosity Computation SEARCH Entrez SNP Blast SNP Batch Query By Submitter New Batches Method Population Detail Class Publication Chromosome Report Locus Information STS Markers Free Form Search Simple Advanced Mouse Strains HAPLOTYPE Specifications Sample HapSet Sample Individual