Analysis of the Elephant Immunoglobulin Genes Figure 7. Alignment of nucleotide sequences of seven elephant germline DH families. Seven families representing elephant 87 germline DH segments are aligned. Nucleotides that are the same as the top segment, DH34, are indicated with dots. Dashes mean gaps introduced to make the alignment. DH57 and 62, DH50 and 38, DH74 and 66, and DH47 and 36 are shadowed as they share identical sequences. Coding regions of DH segments are separated from recombination signal sequences (RSSs) (nonamer, spacer, and heptamer). doi:10.1371/journal.pone.0016889.g007 PLoS ONE | www.plosone.org 8 February 2011 | Volume 6 | Issue 2 | e16889