ABSTRACT
Nucleic acids are linked with proteins to form nucleoproteins. The fundamental unit is always a nucleotide composed of a phosphoric acid molecule, a pentose, and a puric or pyrimidic base. Histochemical methods permitting visualization of nucleic acids can be classified into four categories that are functions of the visualized molecular component:
Puric and pyrimidic acids permit nucleic acid detection by use of ultraviolet spectrography.
