Day: August 18, 2022

What is ONP in biology?What is ONP in biology?

What is ONP in biology? Infobox references. ortho-Nitrophenyl-β-galactoside (ONPG) is a colorimetric and spectrophotometric substrate for detection of β-galactosidase activity. This compound is normally colorless. However, if β-galactosidase is present,