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 (prō-no͞o′klē-əs, -nyo͞o′-)
n. pl. pro·nu·cle·i (-klē-ī′)
The haploid nucleus of a sperm or egg before fusion of the nuclei in fertilization.

pro·nu′cle·ar adj.


(Government, Politics & Diplomacy) in favour of or supporting the use of nuclear power
ˌproˈnuclearist n, adj
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References in periodicals archive ?
5 years ago using the old, early cryopreservation techniques of slow freezing on day one of development at the pronuclear stage can result in 100 percent survival of the embryos with a 100 percent continued proper development to the day-3 embryo stage," said Sommerfelt.
Different processes of pronuclear events in pressure-treated and CB-treated zygotes at the second meiosis in scallop.
A prolongation was observed in time to pronuclear fading and t2 cleavage times in time-lapse in the non-smoker group (p3 follicles reached >17mm diameter; human chorionic gonadotropin (hCG) trigger which consisted of subcutaneous (sc) injection of recombinant human chorionic gonadotropin (rhCG) (Ovitrelle, Merck Serono, Turkey) or intramuscular urinary human chorionic gonadotrophin (uhCG) (Pregnyl MSD, Turkey) was administered.
Effect of vitrification on mitochondrial distribution and membrane potential in mouse two pronuclear (2-PN) embryos.
In second round SCNT, one hundred and fifty-five pronuclear stage embryos were transferred into the oviducts of 13 recipient goats.
Greenhill and Friedman write in their 1974 obstetrical textbook, "The term conception refers to the union of the male and female pronuclear elements of procreation from which a new living being develops .
Elective cryopreservation of all pronuclear oocytes after GnRH agonist triggering of final oocyte maturation in patients at risk of developing OHSS: a prospective, observational proof-of-concept study.
Preliminary observations on polar body extrusion and pronuclear formation in human oocytes using time-lapse video cinematography.
En consecuencia, el reemplazo mitocondrial ocasionaria, al menos en el caso de la tecnica de la transferencia pronuclear (PT), la muerte deliberada de un ser humano, lo que resulta absolutamente inadmisible desde un punto de vista etico.
A similar technique, called pronuclear transfer, is currently approved in the UK.
Prior to pronuclear microinjection, the purified DNA was diluted to a concentration of 2 ng/[micro]l in microinjection buffer.
Pronuclear morphology and chromosomal abnormalities as scoring criteria for embryo selection.