Naturally occurring Chlorophyll & Phytonutrients Broken Cell Wall Algae Chlorella is a green single-celled microalgae that has naturally occurring chlorophyll, plus other phytonutrients. The cell wall in this high quality chlorella has been broken down mechanically to aid digestibility. NOW Chlorella delivers the natural nutrient profile found in genuine whole foods. Natural color variation may occur in this product. This product is sold by weight not volume.