WordNet

of or relating to a fraternity or society of usually men; "a fraternal order"
(of twins) derived from two separate fertilized ova; "fraternal twins are biovular" (同)biovular
derived from two separately fertilized eggs; "dizygotic twins" (同)dizygous

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Turkalj B1, Kotanidis L2, Nikolettos N2.
Hippokratia.Hippokratia.2013 Apr;17(2):169-70.
Background: Human ovary is known to contain polyovular follicles at birth but it is considered to be rare in adult ovaries. Cases: Four cases are presented where binovular complexes were found after ovarian stimulation. The age of women was 22 to 33 years and all of them had a good response to ovari
PMID 24376325

The potential significance of binovular follicles and binucleate giant oocytes for the development of genetic abnormalities.

Rosenbusch B.
Journal of genetics.J Genet.2012;91(3):397-404.
Normal development of a fertilizable female gamete emanates from a follicle containing only one oocyte that becomes haploid after first meiotic division. Binovular follicles including two oocytes and binucleate giant oocytes that are diploid after first meiosis constitute notable exceptions from thi
PMID 23271027

Conjoined human oocytes observed during assisted reproduction: description of three cases and review of the literature.

Rosenbusch B1, Hancke K.
Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie.Rom J Morphol Embryol.2012;53(1):189-92.
Conjoined oocytes derived from binovular follicles have been suspected to play a role in producing dizygotic twins, mosaicism, tetraploidy or chimeras. This issue is discussed by presenting three examples for conjoined oocytes observed in our programme of human assisted reproduction and by including
PMID 22395521

上田克憲
日本産科婦人科學會雜誌 37(7), 1071-1080, 1985-07-01
部分奇胎の病態について,特に発生機序や予後に関する全奇胎との相違点を明らかにし,部分奇胎に対する臨床的管理法を確立する目的で,部分奇胎57例(うち双胎例:3例)について染色体核型,受精機序,形態学的所見と臨床所見の各種検討を行い以下の結果を得た. 1) 双胎例を除く54例中46例(85.2%)が3倍体で,8例は2倍体であった.受精機序の検討が可能であった2倍体部分奇胎3例中2例は通常の受精による例 …
NAID 110002190847