Cytochemistry is a term used to describe the study of chemical reactions that occur in cells. Other terms that can be used synonymously with cytochemistry include cellular biochemistry and cell chemistry. These terms are often used interchangeably to refer to the same field of study. Other related terms include immunocytochemistry, which is the use of antibodies to identify specific molecules within cells, and histochemistry, which is the study of chemical reactions in tissues. These fields of study have played a crucial role in advancing our understanding of the molecular mechanisms that underlie cellular function and disease. Through the application of these techniques, researchers have developed new diagnostic tools and therapies for a wide range of diseases.