INTERNATIONAL REVIEW OF CYTOLOGY V73, Volume 73

Content: Advisory Editors Page ii Editorial Page Page iii Copyright Page Page iv List of Contributors Pages ix-x Protoplasts of Eukaryotic Algae Original Research Article Pages 1-19 Martha D. Berliner Polytene Chromosomes of Plants Original Research Article Pages 21-53 Walter Nagl Endosperm—Its Morphology, infrastructure, and Histochemistry Original Research Article Pages 55-102 S.P. Bhatnagar, Veena Sawhney The Role of Phosphorylated Dolichols in Membrane Glycoprotein Biosynthesis: Relation to Cholesterol Biosynthesis Original Research Article Pages 103-147 Joan Tugendhaft Mills, Anthony M. Adamany Mechanisms of Intralysosomal Degradation with Special Reference to Autophagocytosis and Heterophagocytosis of Cell Organelles Original Research Article Pages 149-182 Hans Glaumann, Jan L.E. Ericsson, Louis Marzella Membrane infrastructure in Urinary Tubules Original Research Article Pages 183-242 Lelio Orci, Fabienne Humbert, Dennis Brown, Alain Perrelet Tight Junctions in Arthropod Tissues Original Research Article Pages 243-318 Nancy J. Lane Genetics and Aging in Protozoa Original Research Article Pages 319-354 Joan Smith-Sonneborn Index Pages 355-358 Contents of Recent Volumes Pages 359-365