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Fig. 29. Changes of growth (lower) and toxin production (upper) of Alexandrium tamarense by addition of yeast extract (20 mg·L–1) under light limited condition. Culture was divided to two parts after lowering light intensity at mid-exponential phase. A: Control culture, B: culture supplemented with yeast extract at the time indicated by arrow. Reprinted from Ogata et al., Utilization of organic substances for growth and toxin production by Alexandrium tamarense. In: Yasumoto, Oshima and Fukuyo (eds). Harmful and Toxic Algal Blooms. Intergovernmental Oceanographic Commission of UNESCO, Paris. 1996, pp. 343–346, Fig. 4.

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