| BAP | bacterial alkaline phosphatase; Behavior Activity Profile; beta-amyloid peptide; blood-agar plate; b... |
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| BAPS | biomechanical ankle platform system; bovine albumin phosphate saline; British Association of Paediat... |
| BAPV | bovine alimentary papilloma virus |
| BCPV | bovine cutaneous papilloma virus |
| BCtg | bovine chymotrypsinogen |
| in the placenta | Intervillous fibrin with ischemic necrosis of villi. (05 Mar 2000) |
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| total placenta previa | Placenta previa in which the placenta entirely covers the internal os of the cervix. Synonym: central placenta previa, total placenta previa. (05 Mar 2000) |
| endotheliochorial placenta | A placenta in which the chorionic tissue penetrates to the endothelium of the maternal blood vessels. (05 Mar 2000) |
| endothelio-endothelial placenta | A placenta in which the endothelium of the maternal vessels comes in direct contact with the endothelium of the foetal vessels to form the placental barrier. (05 Mar 2000) |
| epitheliochorial placenta | A placenta in which the chorion is merely in contact with, and does not erode, the endometrium. (05 Mar 2000) |
| twin placenta | The placenta(s) of a twin pregnancy; if dizygotic, the placenta's may be separate or fused, the latter retaining two amniotic and two chorionic sacs (dichorionic diamniotic placenta); if monozygotic, the placenta may be a (05 Mar 2000) |
| zonary placenta | A placenta in the form of a band encircling the interior of the uterus. Synonym: zonary placenta. (05 Mar 2000) |
| labyrinthine placenta | A placenta in which maternal blood circulates through channels within the foetal syncytiotrophoblast. (05 Mar 2000) |
| foetal placenta | <embryology> Placenta foetalis, the chorionic portion of the placenta, containing the foetal blood vessels, from which the funis develops; specifically, in humans, it develops from the chorion frondosum. Synonym: pars foetalis placentae. (05 Mar 2000) |
| low placenta | Location of the placenta in the lower part of the uterus (womb) so that the placenta partially or completely covers the cervix. Also known as a placenta previa. (12 Dec 1998) |