Fig. 4. MSxx and P₄ do not chemotax towards each other during gastrulation. Asterisks indicate Ea and Ep, an `X' indicates the removed cells, and the remaining neighbor is labeled with an arrow. (A-C) P₄ moves with respect to Ea and Ep in the absence of MS. (D-F) MSxx moves with respect to Ea and Ep in the absence of P₄. (G) Angle quantification of six sets of each manipulation, as in Fig. 3. The angle measurements for P₄ represent only the first 12 minutes of movement, as this number was significant from mom-2 P₄ (see Results, Table 1). Scale bars: 10 µm.

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