Gorgoni B, Caivano M, Arizmendi C, Poli V. The transcription factor C/EBPbeta is essential for inducible expression of the cox-2 gene in macrophages but not in fibroblasts. J Biol Chem. 2001 Nov 02;276(44):40769–77. doi: 10.1074/jbc.m106865200. PMID: 11522796.