Figure 1.
Brevetoxin analyses of four Florida oyster samples by ELISA. Extraction with ether only, ether followed by acetone, or acetone only. Samples 2 and 4 were collected from a commercial bed in central Choctawhatchee Bay two weeks apart. Samples 3 and 5 were collected from east Choctawatchee Bay at the same interval. ELISA analyses were performed on ether extracts (parent brevetoxins), acetone post-ether extracts (polar metabolites of brevetoxins), acetone extracts, and shellfish homogenates (parent brevetoxins and metabolites). Mouse symbols indicate 1) shellfish toxicity according to mouse bioassay (upside down) or 2) absence of toxicity according to mouse bioassay (upside up).