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Ontology Browser
Term:
Parent Terms Term With Siblings Child Terms
nucleus +     
ascospore-type prospore nucleus 
dense nuclear body 
generative cell nucleus 
germ cell nucleus +   
left nucleus 
macronucleus 
megasporocyte nucleus +   
micronucleus 
microsporocyte nucleus 
mitotic nuclear bridge +  
nuclear envelope +   
nuclear inclusion body +   
nuclear lumen +   
nuclear microtubule  
nuclear protein-containing complex +   
nuclear stress granule  
nucleus lagging edge 
nucleus leading edge 
primary endosperm nucleus 
pronucleus +   
The nucleus of either the ovum or the spermatozoon following fertilization. Thus, in the fertilized ovum, there are two pronuclei, one originating from the ovum, the other from the spermatozoon that brought about fertilization; they approach each other, but do not fuse until just before the first cleavage, when each pronucleus loses its membrane to release its contents.
retrotransposon nucleocapsid 
right nucleus 

Synonyms
Xrefs: Wikipedia:Pronucleus
Only In Taxon: NCBITaxon:33208 ! Metazoa
Definition Sources: ISBN:0198506732

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