What is chromatin immunoprecipitation?

Chromatin immunoprecipitation is a type of immunoprecipitation experimental technique used to investigate the interaction between proteins and DNA in the cell. It aims to determine whether specific proteins are associated with specific genomic regions, such as transcription factors on promoters or other DNA binding sites, and possibly defining cistromes. 

Reference

  Collas, Philippe. "The current state of chromatin immunoprecipitation." Molecular biotechnology 45.1 (2010): 87-100.