One such cyanobacterium native to Japan—Aphanothece sacrum, also known as Suizenji-nori—has been extensively studied for its bioactive properties and potential health benefits. Notably ...
Their origin is explained by endosymbiosis, the act of a unicellular heterotrophic protist engulfing a free-living photosynthetic cyanobacterium and retaining it, instead of digesting it in the ...