Table 1. [Cd²⁺]F-based median effect concentration (EC50) in the nutrient-enriched (+NP), phosphorus-limited (-P), and nitrogen-limited (-N) toxicity tests for Microcystis aeruginosa PCC 7806 (WT) and its MC-lacking mutant (MT).

Data are mean ± standard error (n = 2)

	+NP	-P	-N
WT	*8.96×10-11 ± 4.77×10-12	*1.14×10-10 ± 4.79×10-12	*1.15×10-10 ± 3.10×10-12
MT	*1.11×10-10 ± 1.14×10-11	*1.22×10-10 ± 5.26×10-11	*1.15×10-10 ± 7.01×10-13

* No significant difference (p > 0.05) between these EC50s.