“…Yet because DTCs also have numerous pharmacological and sanitary applications ŽTopping and Jones, 1988;Andersen et al, 1989a, b;Basinger et al, 1989;Topping et al, 1989;Shelkova et al, 1990;Tanaka, 1990;Lee et al, 1991;Gale et al, 1992;Jones et al, 1992;Kojima et al, 1992; . Rencova et al, 1993;Hidaka et al, 1995 , the syn thesis of new DTCs is still underway. This means that continued, thorough research of their toxicological aspects is needed, including the application of fast and simple biological screening tests, in order to identify and control the production of those compounds that present or release high levels of toxicity.…”