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.
It may also be used as a substitute to remove the alkaline-like flavor that at times occurs in some baked goods when baking powder or baking soda is added. Many older European and Scandinavian recipes may use the term Baker's Ammonia instead of Ammonium Biocarbonate when referring to this substance.