CDKN2A and squamous cell intraepithelial neoplasia: Strong and diffuse staining pattern with both BC42 and E6H4 clones was observed in 35/36 cervical high-grade SIL cases (Figure 1); in detail, diffuse p16 positivity with both clones was observed in 18/18 CIN3 and 17/18 CIN2 lesions, with only one CIN2 showing negative staining for both p16 antibodies.