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The Mechanism of Cell Division

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Academic year: 2020

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Figure

Fig. 1. Lateral view of oocyte showing in A, the position of equilibrium of the nucleolus; B, thepath followed by the nucleolus after rotating the oocyte through 1800 on a horizontal axis.
Fig. 2. Movemen*. of an egg free to move within the fertilisation membrane, the latter being fixed1in position and the whole system rotated through 1800
Fig. 5. Photographs of living eggs of Echinusresting on the floor of the fertilisation membrane
Fig. 7. Two-celled stage: 1, viewed vertically along axis eO; 2, viewed horizontally along axis yS;3, viewed horizontally along axis aj8.

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