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.
1 Efficiency Ammonia is a highly efficient refrigerant, with a theoretical efficiency slightly higher than that of R134a or propane. 2  Safety Due to the toxicity and flammability of ammonia, installations using ammonia are governed by national regulations. 3  Environment Ammonia is a natural refrigerant.