Cervical immunohistochemistry, which is a chemical reaction that causes chromogenic agents (fluorescein, enzymes, metal ions, isotopes) that label antibodies to develop color to determine antigens (peptides and proteins) within the cells of the cervical tissues, and their localization, characterization, and relative quantification, allows for examination of the cervix for the presence of cancerous lesions. Cervical immunohistochemistry, also known as cervical immunohistochemistry, is a technique that uses immunological principles in which antigens and antibodies react to determine whether or not there is an abnormality within the tissue cells. Immunohistochemistry is commonly used in clinical cervical pathology to identify poorly differentiated or atypical lesions that require immunohistochemistry to determine their histologic type. Usually, low-differentiated squamous cell carcinoma expresses CK56, P40, etc.; adenocarcinoma usually expresses CK-7, CEA; small cell carcinoma expresses CD56, CgA, etc.; and malignant tumors of lymphohematopoietic system express LCA, CD20, etc.