What's the difference between villi and villiform?
Villi
Definition:
(n.) pl. of Villus.
(pl. ) of Villus
Example Sentences:
(1) Confined placental chorionic mosaicism is reported in 2% of viable pregnancies cytogenetically analyzed on chorionic villi samplings (CVS) at 9-12 weeks of gestation.
(2) Proliferating cells were abundant and scattered throughout the stratified epithelium before the appearance of villi.
(3) Acclimation to 10 degrees C or 30 degrees C resulted in large differences in the dimensions of villi.
(4) With the use of the radioimmunoassay for growth hormone--releasing inhibiting factor (GIF), it was found that measurable amounts of GIF-like substance existed in the chorionic villi and decidua of pregnant women.
(5) In the partial moles there is a slow hydatidiform change that affects only some of the villi, but which seems to follow along the same lines as in complete moles.
(6) Eight women at risk of bearing a child with a genetic defect had diagnostic chorionic villi sampling.
(7) We analyzed the trophoblast subpopulations which appear on touch smears of chorionic villi morphologically and immunohistochemically, using the uterine contents of 37 cases of induced abortion.
(8) In addition, we found that carbamoylphosphate synthetase mRNA is present mainly in the epithelium of the crypts of the proximal part of the small intestine, whereas carbamoylphosphate synthetase protein is present in the epithelium of both crypts and villi.
(9) The enzyme was found to be most active in the proximal quarter intestine and in the upper third of villi.
(10) Although normal human chorionic villi-associated hydrophobic placental folate receptors (PFR) are converted to hydrophilic forms by an endogenous, EDTA-sensitive, Mg(2+)-dependent protease under serum-free conditions (Verma, R. S., and Antony, A. C. (1991) J. Biol.
(11) The interconnected central lacteals in the villi overlying the interfollicular area were connected with the lymphatic plexus in the area.
(12) Hypercellular villi are found to have no importance.
(13) This basic surface was amplified to 500 cm2 by villi and to 1 m2 by the microvilli of enterocytes.
(14) Extensive interdigitation of cytoplasmic extensions and extended villi was present in mucinous and serous clusters which appeared to strengthen cluster cohesiveness.
(15) Also in comparison to the crypts, the villi incorporated 1.5-fold more [(14)C]-acetate into sterols, a ratio similar to that describing the distribution of HMG-CoA reductase in the two cell populations.
(16) Many thousands of arachnoid villi subtend all the membranes from the intrathecal space, and many of these end in the large epidural veins.
(17) The remaining, smaller villi lose their connection with the decidua.
(18) This study compares, in 2-d-old rats, the migration rates of epithelial cells on villi of the small intestine, using two labelling methods: a single [3H] thymidine injection; and cytoplasmic labelling by a single ingestion of Pu-citrate.
(19) As invasion continued trophoblastic villi, consisting of cores of cytotrophoblast covered by a continuous layer of syncytium, penetrated deeper into the endometrium.
(20) Investigations revealed total atrophy of the villi and primary agammaglobulinemia.
Villiform
Definition:
(a.) Having the form or appearance of villi; like close-set fibers, either hard or soft; as, the teeth of perch are villiform.
Example Sentences:
(1) Tissues surrounding all joints implanted more than one year showed some degree of discoloration indicative of metallosis, whereas after two years the synovium was hypertrophic and villiform.
(2) There were three types of columnar epithelia above the lower esophageal sphincter: atrophic gastric-fundic-type epithelium with parietal and chief cells; junctional-type epithelium with cardiac mucous glands; and distinctive specialized columnar epithelium with a villiform surface, mucous glands and intestinal-type goblet cells.
(3) Targeted biopsies should also be obtained from areas where the surface appears raised as a broad-based polyp, low irregular plaque or villiform elevation, or from an unusual ulcer, particularly one with raised edges, or from a stricture.
(4) Prominent villiform processes extend from the inner segments of rods and, to a lesser extent, cones.
(5) The month is terminal and bounded by upper and lower lips, which are provided with many villiform teeth.
(6) Endoscopic biopsies between 33-35 cm from the incisors, above the gastroesophageal junction, showed columnar metaplasia with a villiform surface, mucous glands, intestinal goblet cells, moderate inflammatory changes and focal mild dysplasia.
(7) Electron microscopy of two cases revealed a polymorphous population of fibrohistiocytic cells resembling those typical of malignant fibrous histiocytoma, admixed with lymphocytes and plasma cells, but sporadic cells expressed mesothelial properties in the form of sinuous villiform processes, intracytoplasmic neolumina lined by microvilli, and intermediate filaments that were aggregated into tonofilament bundles in some cells.
(8) During late gestation, the maternal uterine epithelium possesses 2-3 cm long spatulate, villiform appendages, termed trophonemata.
(9) These mitochondria are more variable in external form and often possess increased numbers of villiform cristae.