Division in Isolated Generative Cells of Allemanda neriilolia PLASMALEMMA ATPase OF DUNALIELLA SALINA AND ITS RELATION TO HYPEROSMOTIC SHOCK Current Methods Used to Isolate and Purify Generative and Sperm Cells from Pollen Grains and Tubes of Flowering Plants Effect of Osmotic Shock on Protein Phosphorylation in Dunaliella salina Cells