Phylogenetic relationships of 21 cathelicidins using the cathelin-like domain from 11 vertebrate species. A total of 102 amino acids were used for the analysis. The species names are indicated within parentheses. The numbers on the branches represent bootstrap values to support the branch (1,000 replications). Accession numbers of the sequences are as follows: LL-37 (NP_004336.3), PR-39 (NP_999615.1), PMAP-23 (NP_001123448.1), PMAP-36 (NP_001123437.1), BMAP-27 (NP_777257.1), BMAP-28 (NP_776935.1), Fowlicidin-1 (NP_001001605.1), Fowlicidin-2 (NP_001020001.2), Fowlicidin-3 (NP_001298106.1), rhLL-37 (NP_001028681.1), Bac7 (NP_001009301.1), Bac5 (NP_001009787.1), CRAMP (NP_034051.2), Na-CATH (EU622892), Bf-CATH (EU622893), Oh-CATH (EU622894), Pb-CATH1 (XP_007443270.1), Pb-CATH2 (XP_007445262.1), Pb-CATH3 (XP_007442672.1), Pb-CATH4 (XP_007445036.1), and Pb-CATH5 (XP_015746367.1).