(n.) The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth.
(n.) The part of a pistil or fruit to which the ovules or seeds are attached.
Example Sentences:
(1) These studies, in addition to demonstrating that the placenta contains TRH deamidase activity, suggest that losses of fetal TRH through the placenta are not large.
(2) A cDNA library prepared from human placenta has been screened for sequences coding for factor XIIIa, the enzymatically active subunit of the factor XIII complex that stabilizes blood clots through crosslinking of fibrin molecules.
(3) 1) The incidence of premature rupture of the membranes (PROM), threatened premature delivery, toxemia and abruption placentae were 40.6, 36.4, 7.8 and 3.0%, respectively.
(4) By contrast, there was a rapid exchange of tracer Leu carbon between placenta and fetus resulting in a significant flux of labeled KIC from placenta to fetus.
(5) GnRH has paracrine (local) effects in the gonads and placenta, acts as a neurotransmitter in the central nervous system, and has autocrine regulatory effects in some tumour cells.
(6) However, a history of abruptio placentae revealed an 11-fold risk of premature separation of placentae in subsequent pregnancy.
(7) In the first model, the kinetics of the number of bacteria in the spleen, liver, and placenta of mice inoculated intravenously on day 16 of pregnancy were monitored for 48 h after infection.
(8) This was either giant teratoma of placenta or malformed twin foetus.
(9) DNA of cytomegalovirus (CMV) was examined in 131 placentae and 28 umbilical blood specimens by DNA-DNA hybridization.
(10) A stillborn girl, with external signs of trisomy 18 syndrome, was subsequently shown to have a mosaic pattern in both the lymphocytes and the placenta.
(11) The placenta was demonstrated to increase in thickness with advancing menstrual age.
(12) Glutathione S-transferase (GST) purified from Schistosoma mansoni or human placenta was inhibited by the antischistosomal drug oltipraz (OPZ) in a time- and concentration-dependent manner.
(13) We have found FLT4 expression in human placenta, lung, heart, and kidney, whereas the pancreas and brain appeared to contain very little if any FLT4 RNA.
(14) Based on morphological, virological, biochemical and molecular biological data, it is proposed that the presence of endogenous retrovirus particles in the placental cytotrophoblasts of many mammals is indicative of some beneficial action provided by the virus in relation to cell fusion, syncytiotrophoblast formation and the creation of the placenta.
(15) The levels of oestrogens and progesterone were greater (P less than 0.05) in the umbilical vein than umbilical artery, indicating the endocrine function of the placenta.
(16) In each rabbit, a single fetal sac was opened, the umbilical vessels were cannulated and the placenta was perfused in situ with buffered Krebs solution containing Dextran.
(17) Two similar, 41- and 67-kDa G-proteins were identified in the wheat germ-purified insulin receptor preparations obtained from human placenta.
(18) It was concluded that (i) free fatty acids can cross the rabbit placenta in amounts sufficient to provide the fatty acid components of stored triglyceride and structural lipids; (ii) placental transport of free fatty acids depends in part on maternal blood concentration and on foetal uptake; (iii) foetal circulating free fatty acids are continually exchanging with fatty acid pools in the placenta and with the maternal circulating free fatty acids.
(19) We postulate that the apposition of trophotaenial epithelium to the internal ovarian epithelium constitutes a placental association equivalent to a noninvasive, epithelioform of an inverted yolk sac placenta.
(20) These data suggest that fasting mobilizes maternal fuel stores but that these stores are not effectively used by the placenta or transported to the fetus for storage.