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EGG |
Ovum |
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OVULE |
Immature ovum |
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OVA |
See Ovum. |
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OVUMS |
Of Ovum |
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OVISAC |
A Graafian follicle; any sac containing an ovum or ova. |
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OOSPERM |
The ovum, after fusion with the spermatozoon in
impregnation. |
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HOLOBLAST |
An ovum composed entirely of germinal matter. See
Meroblast. |
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ECTOPLASM |
The outer transparent layer of protoplasm in a
developing ovum. |
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ENTOPLASM |
The inner granular layer of protoplasm in a developing
ovum. |
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DIPLOBLASTIC |
Characterizing the ovum when it has two primary
germinal layers. |
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BLASTODERM |
The germinal membrane in an ovum, from which the embryo
is developed. |
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BLASTOMERE |
One of the segments first formed by the division of the
ovum. |
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VITELLUS |
The contents or substance of the ovum; egg yolk. See
Illust. of Ovum. |
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PERIVITELLINE |
Situated around the vitellus, or between the
vitellus and zona pellucida of an ovum. |
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BLASTIDE |
A small, clear space in the segments of the ovum, the
precursor of the nucleus. |
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MORULATION |
The process of cleavage, or segmentation, of the ovum,
by which a morula is formed. |
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INVAGINATION |
One of the methods by which the various germinal
layers of the ovum are differentiated. |
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MICROMERE |
One of the smaller cells, or blastomeres, resulting from
the complete segmentation of a telolecithal ovum. |
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CENTROLECITHAL |
Having the food yolk placed at the center of the
ovum, segmentation being either regular or unequal. |
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FECUNDATE |
To render fruitful or prolific; to impregnate; as, in
flowers the pollen fecundates the ovum through the stigma. |
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IMPREGNATE |
To come into contact with (an ovum or egg) so as to
cause impregnation; to fertilize; to fecundate. |
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BLASTOSPHERE |
The hollow globe or sphere formed by the arrangement
of the blastomeres on the periphery of an impregnated ovum. |
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SEGMENT |
To divide or separate into parts in growth; to undergo
segmentation, or cleavage, as in the segmentation of the ovum. |
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INCAPSULATION |
The process of becoming, or the state or condition
of being, incapsulated; as, incapsulation of the ovum in the uterus. |
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POLYSPERMY |
Fullness of sperm, or seed; the passage of more than
one spermatozoon into the vitellus in the impregnation of the ovum. |