| a mechanism for slow release of biomagnified cyanobacterial neurotoxins and neurodegenerative disease in guam. | as root symbionts of cycad trees, cyanobacteria of the genus nostoc produce beta-methylamino-l-alanine (bmaa), a neurotoxic nonprotein amino acid. the biomagnification of bmaa through the guam ecosystem fits a classic triangle of increasing concentrations of toxic compounds up the food chain. however, because bmaa is polar and nonlipophilic, a mechanism for its biomagnification through increasing trophic levels has been unclear. we report that bmaa occurs not only as a free amino acid in the gua ... | 2004 | 15295100 |