The levels of immunological genes (SLC11A1, CD-14, CCL2, TLR1, TLR7, TLR8, TLR9, defensin, SP110, SPP1, BP1, A2M, ADORA3, CARD15, IRF3, and SCART1) vary in goats with and without pneumonia [115]. Here, CCL2 is linked to pneumonia.