Microcystin LR concentrations (ppb wet weight) in marine invertebrate gastrointestinal tissues collected from Tank 3 (high microcystin exposure tank) at various time intervals post-exposure1.

1All tanks were flushed continually with clean seawater beginning at 96 H post-exposure.2n = 1 or 2 pooled invertebrates of each species at each sample point, except snails, where n = 7.3nd = microcystin concentration was below minimum detection limits on liquid chromatography-tandem mass spectrophotometry.4--- = not tested.5Average microcystin-LR concentration across the top, middle and bottom of Tank 3 at each time point.