biospin cell genomic dna extraction kit provides a very simple, fast and economic way to isolate pure high¨Cmolecular-weight genomic dna from all kinds of cultured cells. the simple purification procedure, based on the remarkable selectivity of biospin membrane, allows isolation of high yields of pure genomic dna in less than 1 hour. it doesn¡¯t require any expensive equipment, or toxic reagents. the pure dna can be applied extensively in pcr, sequencing, southern blot, mutant analysis, snp and the others.