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The results were compared with 20 placentae from normal term pregnancies where the maternal serum AFP level was not elevated. The mean total placental volume, volume of parenchyma and villous surface area were increased in the placentae associated with a raised maternal serum AFP. More of these placentae were infarcted and the fetal\u2010placental weight ratio was significantly lower.<\/jats:p><jats:p>The hypothesis that elevation of maternal serum AFP level is related to the increase in placental size is addressed.<\/jats:p>","DOI":"10.1002\/pd.1970060505","type":"journal-article","created":{"date-parts":[[2007,3,3]],"date-time":"2007-03-03T19:39:38Z","timestamp":1172950778000},"page":"369-373","source":"Crossref","is-referenced-by-count":30,"title":["Raised maternal serum alpha\u2010fetoprotein in the absence of fetal abnormality\u2010placental findings. A quantitative morphometric study"],"prefix":"10.1002","volume":"6","author":[{"given":"Patricia A.","family":"Boyd","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jean W.","family":"Keeling","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2005,11,21]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/path.1700910117"},{"key":"e_1_2_1_3_1","volume-title":"Morphometry","author":"Aherne W. 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