CCL2 and retinopathy of prematurity: Since we are interested in knowing how the mitochondria control immune cell response, we employed chemokines from a literature review specifically for ROP [25], including monocyte chemoattractant protein 1 (Mcp1) and C-C motif chemokine ligand 5 (Ccl5), which function as a chemoattractant for monocytes.