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- W1998301085 abstract "This contribution represents a continuation of our studies of a gradient in convergent cell movement in the germ ring (GR) during Fundulus gastrulation (Trinkaus et al. [1992] J. Exp. Zool., 261:40-61). In our previous study, we discovered that cells in the dorsal GR nearest the embryonic shield (ES) move toward the ES at a net faster rate than those farther away and that this is due to less meandering. Those farther away meander more. These data suggest the hypothesis that there is a gradient of cues that direct cells to the ES. If so, cells in the ventral GR, farthest from the ES, should meander even more and hence show little or no convergence toward the ES. To test this hypothesis, we have traced the trajectories of individual cells in the midventral GR during midepiboly and have found that, although the general motile behavior of ventral GR cells is the same as that of dorsal cells, they do indeed meander much more and, as a result, show little or no directional movement toward the ES. Taken together, these results indicate that cells of the germ ring move up a gradient in directionality as they converge toward their target, the embryonic shield. One possible explanation for this is that the embryonic shield attracts cells to itself." @default.
- W1998301085 created "2016-06-24" @default.
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- W1998301085 date "1998-07-01" @default.
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- W1998301085 title "Gradient in convergent cell movement duringFundulusgastrulation" @default.
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- W1998301085 doi "https://doi.org/10.1002/(sici)1097-010x(19980701)281:4<328::aid-jez7>3.0.co;2-q" @default.
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