We recently detected enriched transcripts for several immune factors in cultured neonatal OECs by microarray analysis, including lysozyme (Lyz), the chemokines growth-regulated oncogene (Gro, CXCL1) and monocyte chemoattractant protein 1 (MCP1, CCL2), and the interleukin 6-responsive transcription factor CCAAT/enhancer binding protein beta (C/EBPb).