Fig. 2.

Transcripts in unfed cat flea encoding putative transmembrane and secreted proteins. Transcripts in cat flea encoding proteins with putative transmembrane and signal peptide in the exoproteome (n = 177) were functionally annotated and grouped according to the BP (a), MF (b) and CC (c) of the encoded proteins. The percent of proteins on each category is shown. GO annotation for BP, MF and CC was conducted using Blast2GO software (version 3.0; www.blast2go.com). Proteins selected as candidate protective antigens (F1-F6; Table 1) are shown. *The transcript for F3 was not identified in the cat flea transcriptome (Table 1), but was included in the figure to compare with other candidate protective antigens