Figure 1From: The type IV pilin, PilA, is required for full virulence of Francisella tularensis subspecies tularensisA-D. Analysis of gene transcription in wild-type and mutant strains of F. tularensis using RT-PCR of mRNA. The location of the different primers used is indicated by small arrows. Large arrows illustrate direction of transcription. Control reactions where reverse transcriptase was omitted were all negative (data not shown).Back to article page