Files in this Data Supplement:

• Supplemental file 1 - Legends to Fig. S1 to S3.
  MS Word document, 25K.
• Supplemental file 2 - FC LS investigation of typical batch cultures in static flasks of the differentiating ATCC 824 (wild-type) strain and the derivative asporogenous M5 strain (Fig. S1).
  Zipped MS PPT file, 398K.
• Supplemental file 3 - Temporal analysis of batch culture sporulation for multiple strains of C. acetobutylicum (Fig. S2).
  Zipped MS PPT file, 422K.
• Supplemental file 4 - Correlation of FC LS characteristics with butanol flux for two ATCC 824 experiments (Fig. S3).
  Zipped MS PPT file, 769K.