animal pole


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animal pole

n. Embryology
The portion of an egg that is opposite the vegetal pole, that contains the nucleus and most of the cytoplasm, and from which polar bodies are extruded during maturation.

an′imal pole`


n.
the formative part of an ovum, opposite the vegetal pole, that contains the nucleus and most cytoplasm.
[1885–90]
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References in periodicals archive ?
Peripheral astral microtubules were oriented near the animal pole and spread along the cell cortex (Fig.
5), from the animal pole view, ZrOg treated eggs show to spread than control egg (Fig.
Trooper Pearl retrieved an animal pole he keeps in his cruiser - a long pole with a loop at the end used to capture reluctant animals - and climbed into and under the rubble on his hands and knees toward the sounds.
The animal-vegetal axis was established using black ink to visualize the jelly canal located at the animal pole in the jelly coat surrounding the egg.
The cytoplasm migrates to the animal pole where discoidal meroblastic cleavage occurs.
During blastula formation, the blastodermic cells decrease in size and form an embryonic disc in the animal pole (Fig.
Although early cleavages were unaffected even at high chlorpyrifos concentrations, micromolar concentrations added at the mid-blastula stage evoked a prominent change in cell phenotype and overall larval structure, with appearance of pigmented cells followed by their accumulation in an extralarval cap that was extruded from the animal pole.
4) In the latter, Deleuze differentiates between these two concepts, which he refers respectively to "a vegetable or vegetative pole (permeation) and the animal pole (acting out)," and emphasizes the potential for violence that exists in both.
However, as the 1st polar body was released, a cap of nonpigmented cytoplasm appeared at the animal pole (Fig.