...Sarah Crisp; Jan Felix Evers; André Fiala; Michael Bate We used non-invasive muscle imaging to study the onset of motor activity and emergence of coordinated movement in Drosophila embryos. Earliest movements are myogenic, and neurally controlled muscle contractions first appear with the onset...

... recruitment of the definitive endoderm, and causes cells in the endoderm to remain stationary during gastrulation. The observation that the endoderm cells are inherently unable to move despite the expansion of the mesoderm in the Mixl1- null mutant suggests that the movement of the endoderm and the mesoderm...

... collars are involved with the forward movement of the slug. The mutant strain HU2421 lacks the MUD50-epitope and forms collars which do not remain stationary but move backwards along the slug to collect at a ‘waist’ region. The slipping-collars observed in the mutant correlated with very slow migration...

... the movement of synthetic RNAs in fertilized embryos by similar methods to those used in oocytes. Embryos were injected at the 1-cell stage in either the animal or vegetal pole, with a mixture of Xenopus histone H4 and chicken lysozyme RNAs. At the 8-cell stage, the embryos were frozen, bisected and analysed...