Effect of environmental factors and algae density on the growth and nutrient uptake in Porphyra yezoensis Preparation of Polysaccharide from Porphyra yezoensis Ueda and Its Effects on Growth of Lymphocytes Pilot Preparation and Optical Properties of Highly Purified Phycoerythrin from Porphyra yezoensis Photosynthetic characteristics and SAMS gene expression in the red alga Porphyra yezoensis Ueda under high salinity On the Differentiation and Development of Cells Isolated from Thalli of Porphyra yezoensis Ueda