FIG. 3.

Alignment of duck IFN-γ with human IFN-γ and other avian IFN-γ sequences. Sequences were obtained from GenBank and aligned by using the CLUSTALW (1.74) multiple sequence alignment program. The sequences shown are duck IFN-γ, chicken IFN-γ (X99774), turkey IFN-γ (AJ000715B), pheasant IFN-γ (AJ001289), quail IFN-γ (AJ001678), guinea fowl IFN-γ (AJ001263), and human IFN-γ (X13274). Asterisks indicate identity, colons indicate conservative substitutions, and periods indicate semiconservative substitutions. Gaps introduced to optimize the alignment are shown as dashes.