A histochemical and ultrastructural study of the ontogeny and differentiation of pollen inPodocarpus macrophyllus D. Don I. K. VasilH. C. Aldrich OriginalPaper Pages: 1 - 37
Development of the pollen grain wall: Further work withTradescantia bracteata R. H. Mepham OriginalPaper Pages: 39 - 54
Cell division in morphological mutants ofAgmenellum quadruplicatum, strain BG-1 Lonnie O'Neal IngramE. Laurence Thurston OriginalPaper Pages: 55 - 75
Interactions between microtubules and the nuclear envelope during mitosis in a fern J. Burgess OriginalPaper Pages: 77 - 89
The cytology, histochemistry, and ultrastructure of the cell types found in the digestive gland of the slug,Agriolimax reticulatus (Müller) Graham Walker OriginalPaper Pages: 91 - 109
Light and electron microscope investigations on the salivary glands of the slug,Agriolimax reticulatus (Müller) Graham Walker OriginalPaper Pages: 111 - 126
Effect of endocytosis upon acid phosphatase activity ofTetrahymena pyriformis T. R. Ricketts OriginalPaper Pages: 127 - 137
Elektronenmikroskopische Untersuchungen über Bildung und Struktur der Zygotenwand beiMicrasterias papillifera (Desmidiaceae) Ludwig Kies OriginalPaper Pages: 139 - 146
Transfer cells in the vascular system of stems: Taxonomy, association with nodes, and structure B. E. S. GunningJ. S. PateL. W. Green OriginalPaper Pages: 147 - 171
Mikrospektralphotometrische Untersuchungen an lebenden Zellen der Schuppenblattoberepidermen vonAllium cepa nach Toluidinblau 0- und Nilblauchlorid-Färbung Ioannes Tsekos OriginalPaper Pages: 173 - 190
Localization of tryptophan rich proteins and β-glycerophosphatase activity inCuscuta haustorial cells G. Tripodi Brief Reports Pages: 191 - 196
Preliminary observations on organogenesis inTaraxacum officinale tissue cultures B. G. Bowes Brief Reports Pages: 197 - 202
The occurrence of microtubules in the pre-streak chick embryo Esmond J. SandersSara E. Zalik Brief Reports Pages: 203 - 208