(1) Intracellular fluids of marine elasmobranchs (sharks, skates and rays), holocephalans and the coelacanth contain urea at concentrations averaging 0.4m, high enough to significantly affect the structural and functional properties of many proteins.
(2) The scales of coelacanths show a remarkable three-dimensional arrangement of this network which is similar to a regularly twisted plywood.
(3) The primary structure of the major parvalbumin (pI = 4.52) from coelacanth muscle (Latimeria chalumnae) has been determined.
(4) ENDANGERED NICKNAMES "The Comoros National Team are known as the Coelacanths," writer Robert Abushal.
(5) Among living fish, the coelacanth Latimeria chalumnae (Actinistia), which is the only recent representative of the Crossopterygii (Actinistia and Rhipidistia), the lungfish (Dipnoi) and ray-finned fish (Actinopterygii), have each been considered as sister-groups of the tetrapods.
(6) Meyer and Wilson's (1990) 12S rRNA phylogeny unites lungfish and tetrapods to the exclusion of the coelacanth.
(7) The presence of unglycosylated PLP in CNS myelin of the actinistian coelacanth contradicts an association with cartilaginous fishes but supports tetrapod affinities closer than those of lungfish.
(8) Immunoblotting using a rabbit antiserum raised against the carboxyl terminal sequence of rat PLP (residues 257-276) identified this epitope on the PLP components of both tetrapod (rat, chicken, lizard, and frog) and lobe-finned fish (coelacanth and lungfish) CNS myelin, including the DM-20 isoform of PLP, which is restricted to rat, chicken, and lizard CNS myelin.
(9) Elasmobranch fishes, the coelacanth, estivating lungfish, amphibians, and mammals synthesize urea by the ornithine-urea cycle; by comparison, urea synthetic activity is generally insignificant in teleostean fishes.
(10) All lungfishes seem to be more closely related to tetrapods than the coelacanth is.
(11) Urea occurs in liver of the coelacanth Latimeria chalumnae to the extent of about 1.7 percent by weight.
(12) A tree based on inferred amino acid replacements, silent transversions, and ribosomal RNA (rRNA) substitutions showed with statistical confidence that the lungfish mtDNA is more closely related to that of the frog than is the mtDNA of the coelacanth.
(13) Fossils dating from the time of origin of tetrapods in the Devonian offer the only hope of understanding the morphological innovations that led to tetrapods; morphological analysis of the "living fossils," the coelacanth and lungfish, only lends confusion.
(14) Combination with results from manual sequence analysis has given the 247-residue amino acid sequence of coelacanth triose phosphate isomerase in 4 months, by using 100mg of enzyme.
(15) This result appears to rule out the possibility that the coelacanth lineage gave rise to land vertebrates; hence, morphological characters that link the latter two groups are possibly due to convergent evolution or reversals and not to common descent.
(16) Parvalbumins from coelacanth (Latimeria chalumnae) myogen have been isolated by gel filtration of Sephadex G-75 and DEAE-cellulose chromatography.
(17) Thus the primary structure of Latimeria haemoglobin indicates that the coelacanth is the closest living relative of tetrapods.
(18) The pineal complex of the coelacanth, Latimeria chalumnae was studied light and electron microscopically.
(19) When the coelacanth was used as an outgroup, Lissamphibia (living amphibians) and Amniota (amniotes) were found to be statistically significant monophyletic groups.
(20) To study the molecular phylogeny of these taxa, the sequences were compared with 18S rRNA sequences of the Coelacanth Latimeria chalumnae, the frog Xenopus laevis, and humans.
Lobe
Definition:
(n.) Any projection or division, especially one of a somewhat rounded form
(n.) A rounded projection or division of a leaf.
(n.) A membranous flap on the sides of the toes of certain birds, as the coot.
(n.) A round projecting part of an organ, as of the liver, lungs, brain, etc. See Illust. of Brain.
(n.) The projecting part of a cam wheel or of a non-circular gear wheel.
Example Sentences:
(1) The findings suggest that these two syndromes are associated with dysfunction at two different sites within the frontal lobes.
(2) It is possible that the elements provide common precursor proteins that reach the secretory intermediate lobe cells through their dendritic branches.
(3) The authors discuss the results of the diagnosis and treatment of abscesses of the right hepatic lobe which were consequent upon ischemic necrosis; they were encountered after cholecystectomy in 0.15% of cases.
(4) Out of 50 epileptics in 31 cases temporal-lobe epilepsy was present, in 15 the seizures and EEG changes were generalized, in 4 cases focal non-temporal-lobe epilepsy was recognized.
(5) Four had partial simple seizures with secondary generalisation and 3 had cortical excisions (2 frontal, 1 occipital lobe) surgery.
(6) We report the case of a premature infant, small for gestational age, who experienced rostral herniation of a portion of frontal lobe through the anterior fontanel as the result of a hemorrhagic cerebellar infarction followed by a large parieto-occipital intracerebral hemorrhage.
(7) Although an unequivocal decision is not possible from existing knowledge, psychomotor or complex partial seizures of temporal lobe epilepsy would be the most tenable diagnosis.
(8) The hippocampus plays an essential role in the laying down of cognitive memories, the pathway to the frontal lobe being via the MD thalamus.
(9) Pulmonary pressure-flow (P-Q) curves from 24 lobes were obtained at baseline and after each intervention.
(10) Future research and clinical evaluations should focus on the components of the learning and memory processes when the ramifications of temporal lobe ablations on cognitive function are studied.
(11) The ventral tract ends almost entirely in the anterior lobe with the majority of fibres terminating contralateral to the side of the hemisection.
(12) Increased intensity of stereotypy was observed reaching a maximum 14 days after frontal lobe damage.
(13) Silicotuberculous bronchadenitis, conglomerate-cirrhotic lower-lobe silicotuberculosis and their complications (e.g.
(14) There were no differences in brain metabolic rates in lateral cortical areas (frontal, parietal, temporal, and occipital lobes).
(15) The purpose of this study was to determine if aspirin, in doses that elevate plasma salicylate concentrations to values reported in patients with salicylate-induced pulmonary edema, produce pulmonary vasoconstriction in a canine, isolated perfused left lower lung lobe (LLL) preparation.
(16) 99mTc-MAA accumulation was seen in the left lobe of the liver in a patient with occlusion of the IVC and common iliac veins.
(17) The immunocytochemical studies confirm the presence of ACTH in the intermediate lobes of all species studied so far, and stimulate the question of the mechanism of ACTH synthesis at this level.
(18) The correlation between two examiners in lobe size assessment was significant.
(19) Zebrin II-negative Purkinje cells are present in a continuous region encompassing the rostromedial part of the valvula, the lobus transitorius, lobe C1 and the ventral part of lobe C2, and in a small, lateral zone of the posterior part of the caudal lobe.
(20) Patients with temporal lobe abnormalities were significantly younger at the onset of panic disorder and had more panic attacks compared with patients with normal MRI scans (p less than .05).