perivitelline space


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perivitelline space

[¦per·ə′vid·əl‚ēn ‚spās]
(cell and molecular biology)
In mammalian ova, the space formed between the ovum and the zona pellucida at the time of maturation, into which the polar bodies are given off.
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Xia P Intracytoplasmic sperm injection: correlation of oocyte grade based on polar body, perivitelline space and cytoplasmic inclusions with fertilization rate and embryo quality.
A somatic cell with a diameter at approximately 20 m was injected into the perivitelline space through the same slit.
A universal characteristic of OGPs is their association with the zona pellucida and perivitelline space of oocytes and embryos, with the possible exception of the mouse zona pellucida.
The space between the vitelline envelope and the egg cell membrane, the so-called perivitelline space, was filled with fluid.
Maturation rate in vitro of oocytes are assessed by various methods like staining the oocytes (M-II stage), identification of extruded first polar body in the perivitelline space and degree of expansion of cumulus cell mass (Raghu et al.
In contrast, Hemicentrotus blastulae had a more extensive perivitelline space than T.
Some of these embryos remained normal at the mid-blastula 2 stage (category 0), whereas others exhibited anomalies: inhibition of hatching, precocious appearance of mesenchyme cells in the blastocele, and extrusion of some cells to the perivitelline space (Figure 7C, 8A).
The research team, led by Andrea Laws-King and Alan Trounson of Monash University in Melbourne, squirts one sperm into the perivitelline space, a fluid-filled area between the zona and the membrane enclosing the egg itself.
Fibroblasts were trypsinized into single cells and transferred into the perivitelline space of enucleated oocytes.