Effect of Cu2+ on PSⅡ Activity and Energy Transfer of Phycobillisome in Intact Cells of Spirulina platensis SELECTION AND RAPD ANALYSIS OF A NEW SPIRULINA PLATENSISSTRAIN WITH HIGH PHYCOBILIPROTEINS CONTENTS Light Energy Transfer Between Phycobiliproteins and Thylakoids of Higher Plants Anticancer activity and mechanism of polysaccharide and phycobiliprotein from Spirulina platensis