最后一步通常用PCR或基于杂交的分析技术。Allis和Wu（2004）已进行综述。
Allis, C.D. and Wu, C. 2003. Chromatin and chromatin remodeling enzymes, Part A, Vol. 375. Academic Press.
染色体免疫共沉淀（Chromatin immunoprecipitation，ChIP）方法程序
1. What is ChIP?
The principle of ChIP is simple: the selective enrichment of a chromatin fraction containing a specific antigen. Antibodies that recognise a protein or protein modification of interest can be used to determine the relative abundance of that antigen at one or more locations in the genome.
ChIP consists of the following steps (summarised in Figure 2):
