During the 1950s, drugs were discovered that could reduce the symptoms of schizophrenia by levels of the neurotransmitter

During the 1950s, drugs were discovered that could reduce the symptoms of schizophrenia by lowering levels of the neurotransmitter dopamine.
These types of drugs are known as phenothiazines. There are two types of neuroleptic drugs that are used for the treatment of schizophrenia symptoms which acts by changing levels of neurotransmitters in the brain, that are typical neuroleptics and atypical neuroleptics.

Ribonuclease activity is a type of nuclease that catalyzes the degradation of rna into small components.