Figure 1.

Concentrations of PSTs in butter clams and blue mussels measured at one site near Juneau, Alaska by the CCTHITA. The dashed line at 80 µg STX-eq 100g⁻¹ is the US FDA limit for human consumption, and the dotted line at 5 µg STX-eq 100g⁻¹ is the detection limit of the assay. Note the log scale on the y-axis.