(n.) The possession of more that the normal number of digits.
Example Sentences:
(1) Pathogenetically, the delta formation may represent an intermediate stage in the bifurcation process of a polydactylic ray.
(2) Two additional forms were also found: four cleft feet with central polydactyly are described as polydactylous type, and three monodactylous feet with lower-leg diastasis or tibial aplasia or both are described as diastatic type.
(3) The degree of enlargement of the nuclear volume fraction in the prechondral (chondrogenic) ray in relation to the mesenchyme is relatively greater in polydactyl embryos than in normodactyl embryos.
(4) The talpid2 (ta2) chick mutant has wide, polydactylous wings and legs.
(5) A significant (P less than or equal to 0.01) 19% increase, peculiar to the prospective polydactylous region, was measured after 4 hours in embryo culture.
(6) The following conclusions were drawn from examining this series and the damaged abortuses' case histories: 1) Major malformations such as central nervous system anomalies, cleft lip, polydactyle, and limb reductions were not caused by maternal genital bleeding but that the bleeding was a consequence of conceiving an abnormal embryo.
(7) The few anatomical findings summarized in the literature have now been expanded by our own anatomical dissections on four hands of still-born infants with postaxial polydactyly, and by intra-operative microsurgical investigations of 25 polydactylous hands.
(8) The infant of the women who had a detectable toxoplasma specific IgM exhibited polydactylism, a common congenital abnormality in Ibadan.
(9) Talpid2 is a simple Mendelian recessive lethal mutation which affects the mesoderm and results in short, spade-like, polydactylous wings and legs.
(10) Taken together, our results suggest that the in vitro outgrowth of the prospective polydactylous region is induced upon escape from the local growth-inhibitory influence of extracellular adenosine.
(11) The effect of this mutant mesenchyme on overlying ectodermal ridge, either mutant or normal, is to thicken the ridge preaxially, leading to increased outgrowth and preaxial polydactylism.
(12) Animals homozygous for the recessive, pleiotropic, mutation hpy(hydrocephalic-polydactyl) develop hydrocephalus early in the postnatal period.
(13) (b) On the 15th, 16th and 17th embryonal day the height of the AER in the praeaxial region of the polydactylous limb bud largely predominates over the controls.
(14) A morphometric analysis showed that formation of the prechondral blastemas was accompanied by a significant increase in the nuclear volume fraction in relation to the adjacent distal mesenchyme in both normodactyl and polydactyl embryos.
(15) A comparison of the height of the AER above digital rays and interdigital grooves of polydactylous and normodactylous animals does not thus exhibit any marked differences.
(16) Animals homozygous for the recessive, pleiotropic, mutation hpy (hydrocephalic-polydactyl) progressively lag behind their wild-type litter-mates in increase in body weight and brain dry weight over the period from 1-40 days post-partum; many homozygotes die within the first 14 days after birth.
(17) Previously only eight dogs with immotile cilia syndrome and a mutant hydrocephalic-polydactyl mouse were reported with respect to these phenomena.
(18) Polydactylous homozygous rats had two or three pollices (six or seven digits) in the forelimbs and one to three preaxial extra digits (six to eight digits) in the hindlimbs.
(19) The following findings were obtained: (a) On the 14th embryonal day, prior to the development of the anlage of mesenchymal condensates, the AER is higher in polydactylous animals as compared with the controls.
(20) There are, however, significant differences between the nuclear volume fractions of the mesenchymal cells at the chosen sites in normodactyl and polydactyl embryos at both 14 and 15 days.
Polydactyly
Definition:
Example Sentences:
(1) Limb abnormalities included lumbar scoliosis, short malformed tibias and fibulas, and polydactyly.
(2) Evidence was presented to demonstrate that, for major malformations such as CNS anomalies, cleft lip, polydactyly and limb reductions, maternal genital bleeding was not a cause but a consequence of the conception of an abnormal embryo.
(3) Two additional forms were also found: four cleft feet with central polydactyly are described as polydactylous type, and three monodactylous feet with lower-leg diastasis or tibial aplasia or both are described as diastatic type.
(4) Cleft hand, central polydactyly, and osseous syndactyly were induced experimentally when the same teratogenic factors acted on the embryos at the same developmental stage.
(5) A new "postaxial polydactyly-progressive myopia" syndrome of autosomal dominant inheritance is delineated on the basis of nine affected persons in four generations of one family.
(6) One of the problems is the relation between polydactyly, syndactyly and typical cleft hand.
(7) The Rieger syndrome is characterized by mesoectodermal dysplasia of the iris and cornea, dental defects, in some cases short stature, abnormal external ears, hypertelorism, arachnodactyly, polydactyly, scoliosis, kyphosis, imperforate anus, umbilical hernia, myopathy and in a few cases mental retardation.
(8) Polydactyly, 0.1% was about as common as the average.
(9) Two infants with cystic kidney dysplasia and polydactyly were born to consanguineous parents.
(10) Fourteen patients with preaxial polydactyly are classified into four types according to their morphologic configuration: type 1--ray duplication; type 2--completely duplicated phalanges; type 3--incompletely duplicated metatarsals; and type 4--incompletely duplicated phalanges.
(11) We present a case of lethal short rib-polydactyly syndrome (SRPS) that cannot be categorized into the existing classification.
(12) A maternal grandaunt also had preaxial polydactyly of the feet.
(13) The triad of the syndrome consists of occipital encephalocele, polycystic kidneys and postaxial polydactyly.
(14) The authors present a new classification of polydactyly based on radiomorphological alterations.
(15) Those of the lower extremities were polydactyly, syndactyly, and cleft foot.
(16) Hall-Pallister syndrome is defined by specific facial anomalies, post axial polydactyly, imperforate anus, and brain anomalies including a rare diencephalic mass, hypothalamic hamartoblastoma.
(17) The patient showed the full spectrum of anomalies including imperforate anus, perineal fistula, triphalangeal thumb, preaxial polydactyly, pre-auricular tags, and microtia.
(18) We present 2 unrelated fetuses with manifestations of both the hydrolethalus syndrome and the short rib-polydactyly syndrome, type Majewski.
(19) Ulnar polydactyly was associated only with sixth-ray duplication.
(20) Both had all three elements of the classical triad, namely, occipital encephalocele, renal cystic dysplasia and post-axial polydactyly.