1. On the taxonomy browser page (by default, the taxonomy browser here is set to start at the virus level), click on the red number following an organism name to view the protein sequences available in NCBI. To go to a specific taxonomic level, click on the organism name. To go to the highest taxonomic level, click on the root link.

2. On the protein sequence page, select "FASTA" in the "Display" selection list. By default, only 20 sequences are displayed on one page. To view more sequences, select the appropriate number on the "Show" selection list. Next, change the "Send to" to "Text". Finally, copy and paste the sequences into the "Epitope conservancy analysis" tool.