The cytotoxic properties of a large cyanobacterial strain set (n>100) are described.
One third of the cyanobacterial extracts exhibited cytotoxic activities.
A comparison of human and rodent cell models using the MTT method is reported.
It was shown that the analysis of one cyanobacterial toxin (toxicity marker) is not sufficient.
A broad spectrum of compounds participates in the resulting cytotoxicity.