Integration of single‐cell RNA sequencing of endothelial cells and proteomics to unravel the role of ICAM1–PTGS2 communication in apical periodontitis: A laboratory investigation

scRNA-seq revealed the diversity of EDs in CAP and identified the possible regulation of ICAM1 by the ferroptosis-related protein, PTGS2, in infected HUVECs and macrophages, thus providing a basis for therapeutic approaches that target the inflammatory microenvironment of CAP.