Quantitative aspects of RNA synthesis in normal and lithium-treated embryos ofXenopus laevis Jeremy OsbornRobert WallMartin Stanisstreet OriginalPaper Pages: 269 - 282
RNA and protein synthesis in developing embryos ofSmittia spec. (Chironomidae, Diptera) Herbert JäckleKlaus Kalthoff OriginalPaper Pages: 283 - 305
Assessment of cell proportions during regeneration ofDileptus anser (Ciliata) Krystyna Golinska OriginalPaper Pages: 307 - 321
Morphogenetic substances in nerve-depletedhydra H. Chica SchallerCornelis J. P. GrimmelikhuijzenHans Bode OriginalPaper Pages: 323 - 328
A comparative ultrastructural study of ‘glue’ production and secretion of the salivary glands in different species of theDrosophila melanogaster group G. N. ThomopoulosC. D. Kastritsis OriginalPaper Pages: 329 - 354
Development ofDentalium following removal of D-quadrant blastomeres at successive cleavage stages James Newton CatherNicolaas Hendrikus Verdonk OriginalPaper Pages: 355 - 366
Age specific cell sorting within aggregates of chick neural retina cells Richard BurtAlfred Gierer OriginalPaper Pages: 367 - 373
Early development of the thoracic discs ofDrosophila Peter A. LawrenceGines Morata Short Commnication Pages: 375 - 379