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 medium^a

Sample	Stable isotope ratio (‰)
	δ13C	δ15N	δ18O	δ2H
1	−14.2	10.8	13.4	−62.8
2	−14.9	9.1	11.6	−71.5
3	−14.3	10.6	9.7	−80.6
4	−14.3	10.9	11.5	−75.5
5	−14.6	10.3	6.0	−92.9
6	−18.0	8.6	5.6	−109.3

^aAll 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.