FIG. 3.
Long-term starvation survival of the histidine auxotroph. The histidine auxotroph and wild-type strains were inoculated into the indicated media to an OD600 of 0.1 and incubated at 37°C. OD600 readings (A) and CFU (B and C) were measured over 14 weeks. Filled shapes, wild type; open shapes, histidine auxotroph; squares, nonsupplemented 7H9; triangles, water. Panel B depicts results for which nonsupplemented 7H9 was used; panel C depicts results achieved with water. Note that no wild-type CFU were measured at week 8.