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3.3. Isolation of myxobacteria Small samples of soil (approx. 0.5 g) were placed on streaks of live cells of E. coli (grown in nutrient broth for 24 h at 37¡ãC, harvested by centrifugation and washed twice by centrifugation and resuspension in distilled water) or Sac. cerevisiae (grown in Saboraud-dextrose broth for 48 h at 25"C and treated as for E.coli, on WA (1.0 g/! CaCI,. 2H_,O, 15 g/I Difco Bacto-agar). Pure cultures were obtained by repeated sub-culture on RDA (WA plus one rabbit dung pellet per plate, autoclaved separately and added before the medium solidified). |
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