| 1. | Their contraction causes the proboscis to be invaginated into its cavity.
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| 2. | The material makes contact with the cell membrane, which then invaginates.
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| 3. | As development progresses, the lens placode begins to deepen and invaginate.
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| 4. | The rostellum remains invaginated in the apex of the organ.
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| 5. | Developing the highly invaginated ruffled membrane apposing the resorption compartment allows massive secretory activity.
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| 6. | This visicle will be subsequently invaginated by means of further inductions from the chordamesoderm.
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| 7. | The ventral depression is actually a glandular epithelium, as opposed to invaginating endoderm.
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| 8. | These actomyosin rings invaginate to separate all nuclei for one another in the syncytial blastoderm.
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| 9. | The ovipositor is clearly visible, partly invaginated in the seventh urite, which is always black.
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| 10. | Clathrin-coated pits in endocytosis : The membrane of the cell invaginates using the protein clathrin.
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