Table 2.

H2 concentrations in center of L. terrestris alimentary canal

Alimentary canal sectionH2 concn (μM)a
AverageSDData range
Crop/gizzard2.6± 2.10.8-6.3
Foregut4.9± 3.20.6-9.1
Midgut1.7± 2.00.4-6.4
Hindgut0.6± 0.50.0-1.7
  • a H2 concentrations were determined from 5 different worms.