(n.) Any American marsupial of the genera Didelphys and Chironectes. The common species of the United States is Didelphys Virginiana.
Example Sentences:
(1) The anatomic and functional development of the suprachiasmatic nuclei (SCN) was studied in the gray short-tailed opossum, Monodelphis domestica.
(2) Circular muscle strips from the opossum esophageal body obtained 3-5 cm above the esophagogastric junction were suspended in organ baths for measurement of isometric tension.
(3) Besides the relative abundance and the high infection rate of the opossum (62.5% by direct methods), its natural association with T. dimidiata was likewise demonstrated.
(4) Two of three noninoculated pouch mates acquired infections during the study based on examinations of feces and tissue sections of all eight opossums.
(5) EFS and VIP both caused relaxation of the resting tone in the opossum-isolated IAS smooth muscle strips.
(6) These findings are discussed with respect to similarities and differences between marsupial and eutherian females and between male and female gray opossums in the hormonal control of sexually dimorphic behavior and morphology.
(7) In the newborn opossum lung, examination of the air chambers with the scanning electron microscope permits the observation of several type II pulmonary epithelial cells in a single field.
(8) We recorded lower esophageal sphincter (LES) pressure and myoelectrical activity concurrently from the esophagus, LES, stomach, and proximal small intestine in unanesthetized opossums.
(9) The effects of intracellular pH on an inwardly rectifying K+ channel ("Kin channel") in opossum kidney (OK) cells were examined using the patch-clamp technique.
(10) Using the North American opossum, Didelphis virginiana, we have developed a new model for studying the effects of early fetal urinary obstruction on subsequent renal development.
(11) A study was designed to measure the Toxoplasma gondii-specific IgM and IgG antibody responses of opossums inoculated with tachyzoites of the temperature-sensitive mutant of T. gondii, ts-4, and to examine its persistence in the tissues.
(12) These results indicate that estrogen receptors are present in early development of the Monodelphis brain and may mark the beginning of a critical period for sexual differentiation of the opossum brain.
(13) The large liquor-contacting area in the pineal recess region, as well as the peculiar organization of its surface, suggest a complex interrelationship between the liquor and the pineal gland of the opossum.
(14) The findings suggested that a receptor resembling DA1-type peripheral receptor mediated the effects of dopamine on opossum oesophagus.
(15) Four young opossums seronegative for anti-Toxoplasma gondii IgM and IgG antibodies immediately after capture and 4 wk later were injected subcutaneously with 1.8 x 10(6) ts-4 tachyzoites; a fifth opossum (also seronegative) received an injection of saline only.
(16) The effects of ambient temperature and of sex on nest-building behavior were studied in a laboratory colony of gray short-tailed opossums, small, Brazilian marsupials.
(17) Opossums that ate the cowbirds had prepatent periods of 5 and 10 days and remained patent for at least 105 days.
(18) Volume regulatory responses of OK cells (a continuous epithelioid cell line from opossum kidney) are examined by electronic cell sizing and measurements of intracellular pH in cell suspensions.
(19) We studied the genesis of isolated LES relaxation in anesthetized opossums by observing the response of four components of the deglutition reflex (mylohyoid electrical activity, pharyngeal contraction, esophageal peristalsis, and LES relaxation) to pharyngeal tactile stimulation, electrical stimulation of superior laryngeal nerve (SLN) afferents or cervical vagal efferents, and to balloon distention of the esophageal body.
(20) In some opossums weak relaxations also occurred in the first few strips below the mucosal junction.
Possum
Definition:
(n.) An opossum.
Example Sentences:
(1) Facebook Twitter Pinterest Locals sell fruit and cuscus, a possum-like marsupial, at the market in Lorengau Not long before the accident, witness said, the driver had been riding around with local women and another taskforce officer, drinking and “not fully clothed”, as Guardian Australia reported on Monday .
(2) In the possum a marked sex difference has been found in the steroids in adrenal venous plasma.
(3) Clinical signs, necropsy findings and histopathological changes are summarized for 43 macropods, two common wombats, two koalas, six possums, 15 dasyurids, two numbats, eight bandicoots and one bilby.
(4) By contrast, the PKC-IR rod bipolar cells in the rabbit and in the brushtail possum, a Metatherian (marsupial) mammal, have no Landolt's clubs and their axons form terminal lobes in the innermost stratum of the inner plexiform layer.
(5) The distribution of ganglion cells in the retina of the adult brush-tailed possum was determined by light microscopy of Nissl stained retinal whole mounts.
(6) A comparison of possum retinal cell generation with that of other marsupials adds support for the "homochrony theory."
(7) They were Red and Grey Kangaroos, Wallaroo, Tammar Wallaby, Brush-tailed possum, Potoroo, and Brown Marsupial Mouse.
(8) The brush-tailed possum, Trichosurus vulpecula, displays an unusual amount of phenotypic variation within its central nervous system.
(9) Twelve possums were anaesthetized with ketamine and chloralose-urethane, and recordings were made of extracellular unit discharges in the inferior colliculus during monaural and binaural tonal stimulation.
(10) The microscopic agglutination (MA) test was utilised to study the prevalence of antibodies to Leptospira interrogans serovar hardjo in 4 populations of brush-tailed possums (Trichosurus vulpecula).
(11) Immunoreactive mesotocin cells were also found in both hypothalamic nuclei of the possum but not of the bandicoot.
(12) In brushtail possums there were no significant differences in MRT among the three digesta markers.
(13) To ascertain whether this seasonality in breeding is manifest in the male reproductive system, body weight and plasma testosterone concentrations were examined in five possums.
(14) It was concluded that oxytocin receptors in the possum have similar characteristics to those of placental mammals.
(15) POSSUM lists 84 syndromes with any of the above 3 main traits.
(16) The involvement of oxytocin receptors in these changes was examined in the brushtail possum Trichosurus vulpecula.
(17) The cytology and ultrastructure of the hypertrophied special zone, which is formed spontaneously in the adrenal cortex of adult female brush-tailed possums (Trichosurus vulpecula), was compared to the adrenocortical tissue in adult males in which the special zone, normally absent, was induced following castration alone or by additional treatment with follicle-stimulating hormone (FSH).
(18) POSSUM was superior to APACHE II in prediction of mortality in patients admitted to a high-dependency unit after general surgery.
(19) The findings suggested that infection was maintained in possum populations by direct transmission, probably associated with breeding.
(20) We have studied the distribution of astrocytes in the ganglion cell and nerve fibre layers of the retina in cat, rat, rabbit, and possum using anti-serum and a monoclonal antibody against glial fibrillary acidic protein (GFAP) and our own monoclonal antibody against glial filaments.