1. Taq Ikeda S K N Watanabe K Minamisawa and N Ytow 2004 Evaluation of Soil DNA from Arable Land in Japan Using a Modified Direct extraction Method Microbes Environ 19 301 309 2. DNA PCR DNA SDS 0 5g 2m 5 0 5 0 1mm 3 DNA DEAE PCR DNA 1ul Template Ampdirect Plus 50ul PCR 2 DNA DNA 1ul 16S rDNA PCR No 1 Taq 2 Taq B 3 Taq A 4 Taq B Taq DNA PCR