Wilhelm Roux's treatise on “qualitative” mitoses — a “classic” by either definition Klaus Sander Essay Pages: 61 - 63
Function of trans-acting genes of theachaete-scute complex in sensory organ patterning in the mesonotum ofDrosophila José Félix de CelisManuel Marí-BeffaAntonio García-Bellido Original articles Pages: 64 - 76
The origin of the nascent blastocoele in preimplantation mouse embryos ultrastructural cytochemistry and effect of chloroquine M. AzizH. Alexandre Original articles Pages: 77 - 85
Terminal differentiation of yolk-sac erythroid cells of the Syrian hamster in vitro Kiyokazu MoriokaReiko Minamikawa-Tachino Original articles Pages: 86 - 94
The eggshell ofDrosophlla melanogaster Flora E. ZaraniLukas H. Margarifs Original articles Pages: 95 - 103
Types of supernumerary outgrowths produced after inverting the dorsoventral limb axis of the anuranBufo bufo P. CostaridisS. PapageorgiouC. Zafeiratos Short Communications Pages: 104 - 107
The sequential expression of tenascin mRNA in epithelium and mesenchyme during feather morphogenesis Richard P. Tucker Short Communications Pages: 108 - 112
Localized distribution of a novel mesenchyme-specific antigen in developing chick digestive organs Keiko Takiguchi-HayashiSadao Yasugi Short Communications Pages: 113 - 116