It is for this reason that is referred to as a complementary DNA or cDNA. Though there are numerous processes for synthesizing cDNA, the best way of doing so is by using mature or fully spliced mRNA. This is usually done by using the enzyme reverse transcriptase.
Ammonia is used as refrigerant prominently in the refrigeration systems of food industry like dairies, ice creams plants, frozen food production plants, cold storage warehouses, processors of fish, poultry and meat and number of other applications.
brake horsepower per ton of refrigeration (BHP/TR) of any industrial refrigerant. Although ammonia is considered to be toxic, its irritating odor will give early warning to personnel to evacuate an area where concentrations are high. Depending on temperature and humidity, humans can detect ammonia vapors in air at concentrations as low as 20 parts per million (ppm). Moderate irritation to the nose begins at about 100 ppm, with major irritation at 400 ppm. Unless incapacitated in some other way, humans will generally quickly evacuate any area where an ammonia leak or spill has occurred before