| pubmed-article:4863048 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:4863048 | lifeskim:mentions | umls-concept:C0599050 | lld:lifeskim |
| pubmed-article:4863048 | lifeskim:mentions | umls-concept:C1622204 | lld:lifeskim |
| pubmed-article:4863048 | lifeskim:mentions | umls-concept:C1326087 | lld:lifeskim |
| pubmed-article:4863048 | lifeskim:mentions | umls-concept:C1522492 | lld:lifeskim |
| pubmed-article:4863048 | lifeskim:mentions | umls-concept:C0205225 | lld:lifeskim |
| pubmed-article:4863048 | pubmed:issue | 1 | lld:pubmed |
| pubmed-article:4863048 | pubmed:dateCreated | 1968-1-22 | lld:pubmed |
| pubmed-article:4863048 | pubmed:abstractText | The differentiation of the primary envelope of oocytes of the seahorse (Hippocampus erectus) and the pipefish (Syngnathus fuscus) has been investigated by techniques of light- and electron microscopy. The developing oocytes have been divided into four stages according to size. Oogonia are designated as stage I; stages II and III are oocytes; stage IV represents mature eggs. The primary envelope which is produced by the oocyte is initially a tripartite structure; for convenience of description, the portions are referred to as zones 1, 2, and 3, respectively. Zone 1 first appears as a homogeneous substance at approximately the middle of the long axis of each microvillus. Zone 2 is immediately beneath zone 1 and consists of an extremely electron-opaque granular component. Zone 3 is subjacent to zone 2; it is the largest and most complex of the three. Zone 3 consists of an amorphous material organized in a reticular-like network. Staining procedures indicate that the envelope is composed of a glycoprotein. Just before the oocyte matures there is a structural alteration in zones 2 and 3. Zone 2 becomes a compact, dense layer and zone 3 becomes multilaminate. Subsequent to these changes, zone 1 degenerates. The classification of egg envelopes is discussed, and comparisons are made between the primary envelope of the teleosts investigated and the primary envelopes of other species. | lld:pubmed |
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| pubmed-article:4863048 | pubmed:language | eng | lld:pubmed |
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| pubmed-article:4863048 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:4863048 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:4863048 | pubmed:month | Oct | lld:pubmed |
| pubmed-article:4863048 | pubmed:issn | 0021-9525 | lld:pubmed |
| pubmed-article:4863048 | pubmed:author | pubmed-author:AndersonEE | lld:pubmed |
| pubmed-article:4863048 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:4863048 | pubmed:volume | 35 | lld:pubmed |
| pubmed-article:4863048 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:4863048 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:4863048 | pubmed:pagination | 193-212 | lld:pubmed |
| pubmed-article:4863048 | pubmed:dateRevised | 2010-9-10 | lld:pubmed |
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| pubmed-article:4863048 | pubmed:year | 1967 | lld:pubmed |
| pubmed-article:4863048 | pubmed:articleTitle | The formation of the primary envelope during oocyte differentiation in teleosts. | lld:pubmed |
| pubmed-article:4863048 | pubmed:publicationType | Journal Article | lld:pubmed |
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