Figure 1.

(a) Diatom Haslea ostrearia with a concentration of marennine in the apices. (b) Solution of extracellular marennine (EMn) after initial purification by precipitation and re-solubilization in formic acid.

(a) Diatom Haslea ostrearia with a concentration of marennine in the apices. (b) Solution of extracellular marennine (EMn) after initial purification by precipitation and re-solubilization in formic acid.