Figure 1.

Relative amounts of microcystin-RR (MC-RR) following exposure of Caco-2 cell monolayers. Transport experiments were performed from apical to basolateral compartments (A,C,E,G) and from basolateral to apical compartments (B,D,F,H). Values of MC-RR amounts in the compartments are presented as mean ± SEM and expressed as percentage of amounts loaded into the donor compartment. Donor compartment: black dots and lines. Receiver compartment: grey dots and lines. Missing data points mean that MC-RR was not detected. Four independent experiments were performed.