International Review of Cytology, Vol. 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