The ultrastructural organization of the isolated cortex in eggs ofNassarius reticulatus (Mollusca) Johanna E. SpeksnijderKees de JongM. René Dohmen OriginalPaper Pages: 119 - 128
Removal of the polar lobe leads to the formation of functionally deficient photocytes in the annelidChaetopterus variopedatus Jonathan J. Henry OriginalPaper Pages: 129 - 136
Mutations in thespalt gene ofDrosophila cause ectopic expression ofUltrabithorax andSex combs reduced Jordi Casanova OriginalPaper Pages: 137 - 140
Cell surface proteins of wholeXenopus embryos identified by radioiodination Judith LitvinMary Lou King OriginalPaper Pages: 141 - 147
Expression of circular and linearized bacterial chloramphenicol acetyltransferase genes with or without viral promoters after injection into fertilized eggs, unfertilized eggs and oocytes ofXenopus laevis Yuchang FuKeiichi HosokawaKoichiro Shiokawa OriginalPaper Pages: 148 - 156
Proximal-distal pattern formation inDrosophila: graded requirement forDistal-less gene activity during limb development Stephen M. CohenGerd Jürgens OriginalPaper Pages: 157 - 169
Organisation and assembly of the surface membrane during early cleavage of the mouse embryo Hester P. M. PrattMartin A. George OriginalPaper Pages: 170 - 178
Immunocytochemical evidence for the presence of two domains in the plasma membrane of sea urchin blastomeres Ikuko YazakiIsao Uemura Short Communication Pages: 179 - 184