21. But those taking nitroglycerine or suffering from severe heart disease should not take Viagra. 22. "It's playing with nitroglycerine . 23. The explosive nitroglycerine is manufactured from glycerine, which is extracted from cow fat. 24. DuPont stopped producing nitroglycerine -based dynamite in 1976, replacing it with Tovex. 25. In this factory, they handled picric acid, nitroglycerine and fulminate of mercury. 26. PETN, or pentaerythritol tetranitrate, is a compound related to nitroglycerine , Persson said. 27. Most people handle nitroglycerine with rubber gloves. 28. Scientists had falsely asserted that the hands of each defendant had tested positive for nitroglycerine . 29. The nitroglycerine will be metabolized to nitric oxide, which will stimulate soluble guanylyl cyclase. 30. Caustic soda is used to break down the molecule of nitroglycerine to produce nitrite ions.