叶绿体是植物进行光合作用的细胞器，“内共生学说”认为叶绿体起源于蓝藻类的原核生物。
Chloroplast is an organelle specialized for carrying out photosynthesis in plants and descended from cyanobacteria according to endosymbiosis.
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。
Spirulina is a blue-green algae, prokaryotic cells do not, structural walls were very thin, easily digested and absorbed.
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