International Review Of Cytology V82, Volume 82

Content: Advisory Editors Page ii Edited by Page iii Copyright Page Page iv Contributors Page vii The Exon: Intron Structure of Some Mitochondrial Genes and Its Relation to Mitochondrial Evolution Original Research Article Pages 1-98 Henry R. Mahler Marine Food-Borne Dinoflagellate Toxins Original Research Article Pages 99-150 Daniel G. Baden Ultrastructure of the Dinoflagellate Amphiesma Original Research Article Pages 151-180 Lenita C. Morrill, Alfred R. Loeblich III The Structure and Function of Annulate Lamellae: Porous Cytoplasmic and Intranuclear Membranes Original Research Article Pages 181-303 Richard G. Kessel Morphological Diversity among Members of the Gastrointestinal Microflora Original Research Article Pages 305-334 Dwayne C. Savage Index Pages 335-339 Contents of Recent Volumes and Supplements Pages 341-345 The adaptive immunity, which provides flexibility and specificity to the defense mechanisms, has two branches: cellular and humoral.