The material, characteristics, nutrition and health function of spirulina blue were reviewed in this paper.

综述了藻蓝的来源、理化性质及营养保健功能，介绍了藻蓝色素的提取制备方法。

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Spirulina is a blue-green algae, prokaryotic cells do not, structural walls were very thin, easily digested and absorbed.

螺旋藻是一种蓝绿色的藻类生物，细胞没有原核、结构壁很薄，极易消化吸收。

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In May 2000, the Oregon Department of Health surveyed 87 samples of non-spirulina blue green algae, finding that 63 had microcystin levels above the regulatory limit.

BBC: Algae may boost immune system

While analysis of spirulina has shown that it does not contain a harmful toxin called microcystin, other blue-green algae has found to be frequently contaminated.

BBC: Algae may boost immune system