IP Chemistry Abbreviation

Ionization Potential

Immunoprecipitation

Immunoprecipitation (IP) is the technique of precipitating a protein antigen out of solution using an antibody that specifically binds to that particular protein. This process can be used to isolate and concentrate a particular protein from a sample containing many thousands of different proteins. Immunoprecipitation requires that the antibody be coupled to a solid substrate at some point in the procedure.

Impact Parameter Approximation

Inhalable Particle

Isoelectric Point

The isoelectric point is the pH at which a particular molecule carries no net electrical charge. The standard nomenclature to represent the isoelectric point is pH, although pI is also commonly seen, and is used in this article for brevity. The net charge on the molecule is affected by pH of its surrounding environment and can become more positively or negatively charged due to the gain or loss, respectively, of protons (H+).