Linked Life Data

3507370

Source:http://linkedlifedata.com/resource/pubmed/id/3507370

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1989-4-27
pubmed:abstractText
In vivo fertilization of goat eggs has been studied by electron microscopy. Eggs were recovered from superovulated or natural cyclic goats, 32 to 52 hours after the onset of oestrus; only eggs recovered between 46 and 52 hours were fertilized. Spermatozoa penetrated the zona pellucida tangentially leaving vesiculated products of the acrosome reaction at the zona surface. As sperm penetrated into the ooplasm, the second meiotic division completed and cortical granule exocytosis occurred. However a few unreacted cortical granules usually remained in the cortex of the fertilized eggs, adjacent to the plasma membrane. After swelling the two pronuclei presented similar ultrastructural morphology: they contained small, compact, agranular nucleoli and unevenly distributed chromatin. The cytoplasm in close vicinity to the apposed pronuclei contained large stacks of annulate lamellae, smooth endoplasmic reticulum, prominent Golgi complexes, as well as dense areas of unidentified material. The abundance of cytoplasmic organelles near the pronuclei might be the expression of intensive metabolic activity. Conversely, in the cortex of fertilized ova several large organelles-free cytoplasmic areas were randomly distributed.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0148-7280
pubmed:author
pubmed:issnType
Print
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
191-9
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Ultrastructure of in vivo fertilization in the goat.
pubmed:affiliation
INRA, Unité Biologie de la Fécondation, Physiologie Animale, Jouy-en-Josas, France.
pubmed:publicationType
Journal Article