Answer:
affinity chromatography
Step-by-step explanation:
Affinity chromatography is a method of separating similar molecules that are in the same biochemical substance. This method consists of two phases called stationary and mobile. According to the physical and chemical properties of the molecule, it will be retained in the mobile phase and will pass into the stationary phase. Meanwhile, the molecule that does not have the desired chemical and physical characteristics will not be retained in the mobile phase, being discarded from the process.