Metabolite | Pool size (nmol section^{−1})^{b} | Injected amt | ||||||
---|---|---|---|---|---|---|---|---|

C. umbratus | C. orthognathus | nmol | Bq | |||||

P1 (1.55 ± 0.23 μl) | P3/4a (0.97 ± 0.16 μl) | P4b (0.32 ± 0.16 μl) | P1 (0.76 ± 0.19 μl) | P3/4a (0.54 ± 0.15 μl) | P4b (0.12 ± 0.02 μl) | |||

Acetate | 6.80 ± 0.39 | 5.86 ± 0.68 | 0.73 ± 0.06 | 3.30 ± 0.07 | 3.83 ± 0.06 | 0.35 ± 0.12 | 0.21 | 61 |

CO_{2}
^{c}
| 26.0 ± 1.5 | 22.4 ± 0.3 | 13.2 ± 2.1 | 13.1 ± 0.9 | 11.0 ± 0.2 | 6.9 ± 1.1 | 1.50 | 315 |

Formate | 0.03 ± 0.03 | <0.01 | 0.06 ± 0.05 | <0.01 | 0.09 ± 0.08 | <0.01 | 0.17 | 340 |

↵a The average volume of the sections (given in parentheses above) was determined by geometric approximation. A complete data set including all metabolites will be published elsewhere (36). For definitions of the sections, see Fig. 1in the companion paper (33).

↵b Values are means (± standard deviations) of three independent values, determined as described elsewhere (35).

↵c Total dissolved inorganic C (CO

_{2}plus HCO_{3}^{−}plus CO_{3}^{2−}).