TABLE 5.

C, N, O, and H stable isotope ratios of genetically identical spore cultures of B. subtilis produced in different batches of liquid Schaeffer's sporulation mediuma

SampleStable isotope ratio (‰)
δ13Cδ15Nδ18Oδ2H
1−14.210.813.4−62.8
2−14.99.111.6−71.5
3−14.310.69.7−80.6
4−14.310.911.5−75.5
5−14.610.36.0−92.9
6−18.08.65.6−109.3
  • a All of these cultures can be excluded from identity with one another by bracketing their stable isotope ratios with a ±3-standard deviation interval, using the standard deviations in Table 2, duplicate measures column.