214 I. Godin and J.-D. Gipouloux: Notochordal catecholamines in Xenopus exogastrulated embryos M.S. Hamaguchi and Y. Hiramoto: Analysis of the role of astral rays in pronuclear migration in sand dollar eggs by the Colcernid-UV method P.K. Pal and S.C. Goel: Studies on the water-soluble lens proteins of the lizard, calotes versicolor, IV. Ontogenic changes T. Ohmori and Y. Maeda: Implication of differential chemotaxis and cohesiveness for cell sorting in the development of Dictyostelium discoideum
M. Koga, H. Kageura and K. Yamana: Use of hybrids between Xenopus laevis and Xenopus borealis in chimera formation: dorsalization of ventral cells H. Nakamura, K.E. Nakano and M. Yasuda: The ontogeny of thymic myoid cells in the chicken H. Nishida: Cell division pattern during gastrulation of the ascidian,
Halocynthia roretzi Published by arrangement with the Japanese Society of Developmental Biologists as a service to readers of Cell Differentiation
Announcements Fourth International Symposium on Invertebrate Reproduction 1-6 September 1986, University of Lille, France
EDBC-87: European Developmental Biology Congress 14-18 June 1987, Helsinki, Finland
For further information contact: Professors Porchet and Dhainaut, Laboratoire de Biologie Animale, Universit4 de Lille I, F. 59655 Villeneuve d'ascq Cedex France. Tel.: (20) 9192222054.
For further information contact: EDBC-Congress Secretariat, P.O. Box 189, SF-00171 Helsinki, Finland, Tel.: 358-0-602 163//662 760, telex 123585 cms sf.
IVth Tissue Culture Association Decennia Review-Cell and Tissue Culture International Conference: Molecular Mechanisms in the Regulation of Cell Behavior 22-26 September 1986, Hershey, Pennsylvania, U.S.A. For further information contact: Executive Director, Tissue Culture Assoc., 19110 Montgomery Vollage Ave., Suite 300, Gaithersburg, MD 20879, U.S.A. Tel.: (301) 869-2900. Preregistration ends on July 22, 1986.