ZD1 is cultured in liquidand wheat grain solid culture, and metabolicproduct is extracted to obtainwatersoluble and liposolublematterfor preparingnematode killing biologicaltoxin.
At one fetid pit in a jungle glade, he stepped gingerly onto the surface of the pool, where the solidmatter in the produced water had congealed into a tarlike crust that was sturdy enough to support him.