On the other hand, the villi on that part of the chorion which is in contact with the decidua placentalis increase greatly in size and complexity, and hence this part is named the chorion frondosum (Fig. 28).    From Wordnik.com.  [I. Embryology. 11. Development of the Fetal Membranes and Placenta] Reference

The second umbilical cord runs to the surrounding chorion.    From Wordnik.com.  [On the Generation of Animals] Reference

Between uterus and embryo are the chorion and the membranes.    From Wordnik.com.  [On the Generation of Animals] Reference

Very rarely, identical twins will share a placenta, chorion, and amnion.    From Wordnik.com.  [Mothering Twins] Reference

She found that they shared one placenta and the chorion, but not the amnion.    From Wordnik.com.  [Mothering Twins] Reference

The membranes amnion and chorion create the amniotic sac that surrounds your baby.    From Wordnik.com.  [Pregnancy, Childbirth, and the Newborn] Reference

Made up of the membranes amnion and chorion that create the sac that surrounds your baby.    From Wordnik.com.  [Pregnancy, Childbirth, and the Newborn] Reference

Each embryo, as in the case of quadrupeds, is provided with a chorion and separate membranes.    From Wordnik.com.  [The History of Animals] Reference

Exochorion: that part of the chorion derived from the ectoderm: the outer layer of the chorion.    From Wordnik.com.  [Explanation of Terms Used in Entomology] Reference

And in some cases membranous envelopes surround the egg, and in other cases the chorion surrounds it.    From Wordnik.com.  [The History of Animals] Reference

In the first place they have not the second umbilicus which runs to the chorion under the surrounding shell.    From Wordnik.com.  [On the Generation of Animals] Reference

The inter-twin membrane has two layers (amnion-amnion) in monochorionic gestations, which appear thin, versus three layers (amnion-chorion-amnion) in dichorionic gestations.    From Wordnik.com.  [Twin-Twin Transfusion Syndrome (TTTS)] Reference

TRAP occurs when there is a monochoriotic pregnancy in which the fetuses are contained within the same (mono) outer membrane of the sac that surrounds the fetus (the chorion).    From Wordnik.com.  [TRAP — Lamartina] Reference

I, of course, had seen the insides of lots of pregnant critters before, but it was still incredible to see the mass of puppies and chorion bodies ballooning and wiggling out of our heeler's belly.    From Wordnik.com.  [grouse Diary Entry] Reference

Both the chorioallantoic placenta and CAM are derived from chorion and allantois.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Nuclear p65 labeling was rare in amnion and chorion, irrespective of clinical context.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

This chorion on which those villi are situated is a membrane "always embryonic" and "not maternal in origin.".    From Wordnik.com.  [VERBATIM: The Language Quarterly Vol XIV No 3] Reference

The Vulgate renders chorion by the word villa, but there is no reason to suppose that there was a residence there.    From Wordnik.com.  [The Catholic Encyclopedia, Volume 6: Fathers of the Church-Gregory XI] Reference

Seen through the latter, the chorion presents a mottled appearance, consisting of gray, purple, or yellowish areas.    From Wordnik.com.  [I. Embryology. 11. Development of the Fetal Membranes and Placenta] Reference

Wildly circumventing the "villi on the chorion," which was next on my list, I proceeded almost directly to ruminants.    From Wordnik.com.  [VERBATIM: The Language Quarterly Vol XIV No 3] Reference

—The fetal portion of the placenta consists of the villi of the chorion frondosum; these branch repeatedly, and increase enormously in size.    From Wordnik.com.  [I. Embryology. 11. Development of the Fetal Membranes and Placenta] Reference

Fusion of the chorion and allantois forms either the chorioallantoic placenta in viviparous (live-bearing) species, or the chorioallantoic membrane.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

While in infected females, chorion structural proteins are overrepresented, with three of the nine genes in the genome being significantly up-regulated.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

The dorsal aortæ give branches to the yolk-sac, and are continued backward through the body-stalk as the umbilical arteries to the villi of the chorion.    From Wordnik.com.  [V. Angiology. 3. Development of the Vascular System] Reference

This latter portion, the veil that passes from the edge of the placenta, is formed of the two membranes we have mentioned, namely, the chorion and the amnion.    From Wordnik.com.  [The Prospective Mother, a Handbook for Women During Pregnancy] Reference

The bones seemed better developed than ordinarily; the skin was thick, callous, and yellowish The chorion, amnion, and placenta were ossified and the cord dried up.    From Wordnik.com.  [Anomalies and Curiosities of Medicine] Reference

Embryol. a patch or circumscribed area of villi on the placenta of a mammal; -- applied esp. to the isolated tufts of villi on the chorion of the typical ruminants.    From Wordnik.com.  [VERBATIM: The Language Quarterly Vol XIV No 3] Reference

The extra-embryonic celom is of considerable size, and scattered mesodermal strands are seen stretching between the mesoderm of the yolk-sac and that of the chorion.    From Wordnik.com.  [I. Embryology. 5. Segmentation of the Fertilized Ovum] Reference

Until about the end of the second month of pregnancy the villi cover the entire chorion, and are almost uniform in size (Fig. 25), but after this they develop unequally.    From Wordnik.com.  [I. Embryology. 11. Development of the Fetal Membranes and Placenta] Reference

Most of these septa end in irregular or pointed processes; others, especially those near the edge of the placenta, pass through its thickness and are attached to the chorion.    From Wordnik.com.  [I. Embryology. 11. Development of the Fetal Membranes and Placenta] Reference

—The chorion consists of two layers: an outer formed by the primitive ectoderm or trophoblast, and an inner by the somatic mesoderm; with this latter the amnion is in contact.    From Wordnik.com.  [I. Embryology. 11. Development of the Fetal Membranes and Placenta] Reference

Cohabitant saffarian groundbird bacterioagglutinin reversibly hunnian nonelopement chorion.    From Wordnik.com.  [More Dots! Cried the Terrorist] Reference

The science wasn’t in place to freeze eggs, because without the chorion the membrane surrounding an embryo, the egg couldn’t survive.    From Wordnik.com.  [After the Diagnosis] Reference