1 Dogs do not need to wait until they are between six months and a year old for spaying or neutering. 2  Most veterinarians recommend having your dog sterilized shortly after the completion of his or her puppy vaccines, around the age of five months. Dogs do not need to wait until they are between six months and a year old for spaying or neutering. 2  Most veterinarians recommend having your dog sterilized shortly after the completion of his or her puppy vaccines, around the age of five months.
alcohol dehydrogenase. (biochemistry). The enzyme that catalyzes the oxidation of ethanol to acetaldehyde.
Alcohol drinking status, including frequency and amount, can be influenced by activities of alcohol dehydrogenases (ADHs) and aldehyde dehydrogenases (ALDHs). ALDH2, a key enzyme in the elimination of acetaldehyde, has a polymorphism that is prevalent in East Asians, but rare in Caucasians or Africans [15].