.... For misexpression in the germ cells, females carrying the fat facets - lacZ ( faf - lacZ ; Fischer-Vize et al., 1992 ; Moore et al., 1998 ) and the nanos -Gal 4 VP16 ( nos- Gal 4-VP16; Van Doren et al., 1998b ) transgenes were generated and tested for a germ cell migration phenotype. These were kept in a heat...

... to specific cell types are poorly understood. In order to identify genes that are required for these processes, we have conducted an extensive mutagenesis of the third chromosome and screened for mutations disrupting germ cell migration at any point in embryonic development. Phenotypic analysis...

... into association with the mesoderm. We will summarize the results of our and other studies of these events before describing a number of enhancer trap lines which show expression in the amnioproctodeal invagination during the early phase of germ cell migration. These reveal more about the com plexity...

... Zwolle, The Netherlands. 10 01 1986 Copyright © 1986 by Company of Biologists 1986 Xenopus laevis germ plasm primordial germ cell inverted embryos grafting germ cell migration Eggs of X. laevis , kept in an off-axis orientation, develop into embryos with significantly...