Trophoblast: Difference between revisions
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→Trophoblast table: +age of villi table |
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Notes: | Notes: | ||
*Keratin is positive in all trophoblastic tissue and negative in decidual tissue.<ref name=pmid1694585/> | *Keratin is positive in all trophoblastic tissue and negative in decidual tissue.<ref name=pmid1694585/> | ||
==Villi and age - table== | |||
{| class="wikitable" | |||
| Gestational age | |||
| Nucleated RBCs | |||
| Cytotrophoblast / syncytiotrophoblast | |||
| Villi size | |||
| Vessels | |||
|- | |||
| First trimester | |||
| present | |||
| both can be identified | |||
| large | |||
| few; location central | |||
|- | |||
| Second trimester | |||
| rare | |||
| cytotrophoblast difficult to identify | |||
| intermediate | |||
| intermediate; location: central/periphery | |||
|- | |||
| Third trimester | |||
| absent | |||
| cytotrophoblast indistinct | |||
| small | |||
| abundant; location: periphery of villi | |||
|} | |||
==See also== | ==See also== | ||