21. The government of Vladimir Putin had refused to identify the active agent in the gas. 22. Agents said they knew of no similar public display by active agents in the past. 23. The FBI has more than 12, 000 active agents . 24. The antimicrobial activity of the active agent may be either reduced or enhanced by polymerization. 25. These compounds are nitrogenous cationic surface active agents . 26. However, these free radicals are also known clastogenic and membrane-active agents thought to promote asbestos carcinogenicity. 27. The substance is used as an active agent protecting plants and fruit / vegetables from fungal diseases. 28. This approach considers Middle Palaeolithic humans as active agents , rather than passive recipients of optimised environmental conditions. 29. Wolf was an active agent in his father's financial transactions, and shared his dignity as court factor. 30. MIYAIRI 588 ( as active agent ).
