What's the difference between fetus and superfetation?
Fetus
Definition:
(n.) The young or embryo of an animal in the womb, or in the egg; often restricted to the later stages in the development of viviparous and oviparous animals, embryo being applied to the earlier stages.
Example Sentences:
(1) The 38 control fetuses had normal-appearing posterior fossae.
(2) A review of campylobacter meningitis by Lee et al in 1985 reported nine cases occurring in neonates, of which only one case was caused by C. fetus.
(3) In addition, congenital anemias such as sickle cell disease can impact on the health of the mother and fetus.
(4) There is precedent in Islamic law for saving the life of the mother where there is a clear choice of allowing either the fetus or the mother to survive.
(5) The aim of this study was to plot the course of the transcutaneously measured PCO2 (tcPCO2) in the fetus during oxygenation of the mother.
(6) Instead of later renal failure and, of course, mental retardation, it was the histological features of the fetus eyes which permit to diagnose and exhibit both congenital cataract and irido-corneal angle dysgenesis.
(7) Paired tolbutamide and glucose infusions using a square wave technique demonstrated that although early phase insulin secretion is dimished in the fetus, this is not due to an absolute deficiency of stored insulin.
(8) The combination of an over-distended uterus caused by a multiple-fetus pregnancy with therapeutic bed-rest may cause mechanical ileus.
(9) Only one ewe aborted, 10 days after the first infecting dose, at 94 days of gestation; L monocytogenes was isolated from several sites in both its aborted fetuses.
(10) One thousand singleton low-risk pregnancies were cross-sectionally studied at 36-40 weeks gestation with continuous-wave Doppler ultrasonography in order to assess its usefulness as an antepartum monitoring technique for the identification of fetuses at risk of developing an adverse outcome.
(11) Histological studies with neonatal mice raise the possibility that Müllerian duct tissue may represent a site for the transplacental toxicity of DES in both the male and female fetus.
(12) It is often necessary to estimate the dose of radiation to a fetus from a series of CT scans.
(13) The perinatal development of the levator ani (LA) muscle in male and female rats was investigated by measuring the total number of muscle units (MU) (i.e., mononucleate cells, clustered or independent myotubes, and muscle fibers) in transverse semithin sections of the entire muscle and the MU cross-sectional area in 22-day-old fetuses (F22), 1-day-old (D1 = day of birth), 3-day-old (D3), and 6-day-old (D6) newborns.
(14) Digitalization by direct intramuscular injection of the fetus successfully controlled supraventricular tachycardia at 24 weeks' gestation after more traditional intensive trials of transplacental therapy with digoxin, verapamil, and procainamide, either separately or in combination, had failed.
(15) 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.
(16) Axosomatic and axodendritic contacts were present in the cortices of the fetuses.
(17) A case of mixed congenital abnormalities in a fetus demonstrated ultrasonographically during the second trimester of pregnancy in an uncontrolled insulin-dependent diabetic mother is presented.
(18) Intensive care monitoring of the fetus during labour improves perinatal conditions in 'high-risk" Black women.
(19) The first is that the supposed exaggerated winter birthrate among process schizophrenics actually represents a reduction in spring-fall births caused by prenatal exposure to infectious diseases during the preceding winter--i.e., a high prenatal death rate in process preschizophrenic fetuses.
(20) Evaluation of the roles of prolactin and placental lactogen in pregnancy in primates has revealed mammotropic, fetal osmoregulatory, metabolic, and steroidogenic roles, which appear to protect the uterine contents during late pregnancy and prepare the fetus for the changes in nutrition at the time of delivery.
Superfetation
Definition:
(n.) The formation of a fetus at the result of an impregnation occurring after another impregnation but before the birth of the offspring produced by it. This is possible only when there is a double uterus, or where menstruation persists up to the time of the second impregnation.
Example Sentences:
(1) Combined pregnancies rarely occur without treatment with ovulation inducing agents by superfecundation and superfetation.
(2) Suspected superfetation was investigated in a Glasgow hybrid stock of mice.
(3) Intervals between successive deliveries that are shorter than the normal duration of gestation do not necessarily indicate superfetation and this phenomenon may be rare among hares in captivity as well as in the wild.
(4) A frequent explanation was that twins were the result of superfetation, a divine impregnation occurring along with that by the lawful husband.
(5) Those phases reviewed include ovulation, fertilization and tubal passage of sperm and fertilized ova, capacitation of spermatozoa, the spacing of ova along the uterus, preimplantation stages of the uterus and uterus-blastocyst interaction, decidualization, the zona pellucida, normal and delayed nidation, superfetation, and the parthogenetic activation of eggs.
(6) This observation reports a case of human superfetation.
(7) The possibility of inducing superfetation in hares by artificial insemination (AI) was investigated.
(8) Ovulation during pregnancy is hypothesized to be the cause of superfetation found in mares.
(9) The second gestation was of normal length and superfetation was not therefore considered to be the cause of the anomalous litters.
(10) In humans, superfetation has been recorded secondary to ovulation induced by clomiphene citrate.
(11) This case report should support earlier evidence that superfetation in the bovine can and does occur.