Fig. 4 Comparison of the BMAA production ability by
diatoms. Positive results of BMAA were detected in these diatom strains
isolated from the coastal area of China and the unit of BMAA
concentration is μg g-1 dry weight. The data without
error bars were obtained in the first batch of cultures and the wet
weight was converted to dry weight. And the data with error bars were
obtained in the second batch of cultures, in which each group was set up
in three parallel cultures and dry weight was used for microalgal cells.