Diverse physiologic effects of foods such as chlorella and Agaricus brazei (himematsutake) do not come from a single component, nor are they effective for particular diseases alone as drugs.
Their effects are considered to be results of an
enhancement of the natural healing power due to coordinated actions of a wide variety of nutrients and physiologically active substances richly contained in them such as vitamins, minerals, polysaccharides, and nucleic acids.
Lets change the viewpoint and look at physiologically active substances in relation to the origin of life.
Green plants such as chlorella belong to plants, mushrooms such as Agaricus belong to fungi, and human beings, who eat them, belong to animals. They have widely different life histories. Therefore, the kinds and effects (action mechanisms) of the physiologically active substances that they produce are also considered to differ widely, and
marked synergistic effects may be obtained by using them in combinations. http://www.chlorella-therapy.com/en/agaricus/p03.php