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Multiple sequence alignment of the SpoIISB and SpoIISC amino acid sequences from the B. cereus group. Residues that are identical in either SpoIISB or SpoIISC are red, and similar ones are purple. Selection pressure is indicated on the SpoIISB and SpoIISC reference sequences (from B. anthracis A0248) shown above each sequence block. Selection pressure intensity is indicated by the given scale bar. The abbreviations are from Table S3.
