(n.) A large bird of the genus Struthio, of which Struthio camelus of Africa is the best known species. It has long and very strong legs, adapted for rapid running; only two toes; a long neck, nearly bare of feathers; and short wings incapable of flight. The adult male is about eight feet high.
Example Sentences:
(1) Occasionally, I have been invited to try exotic meats, ostrich say, or kangaroo or alligator.
(2) A neurophysin has been isolated from ostrich neurohypophyses and shown by partial amino acid sequence determination to be related to mammalian VLDV-neurophysin.
(3) The Texan first-term senator also revealed that he had swapped his usual ostrich-skin "argument boots" for a pair of black tennis shoes after taking advice from Rand Paul, who staged a shorter filibuster last year against US drone strikes.
(4) But if it wasn't the first Lou Reed record, Do the Ostrich was certainly the most remarkable at the time.
(5) Cowhide and goatskin are used to make Mulberry goods, as well as ostrich leather and alligator skins.
(6) As part of this study the N-terminal amino acid sequences of bull frog, sea turtle, turkey, and ostrich alpha-subunits were determined and reported for the first time.
(7) The microclimate of the nest and the rates of egg water loss were studied at weekly intervals throughout the 41-day incubation period in six ostrich nests.
(8) Glucose, triglyceride, gamma-glutamyltransferase, and cholinesterase concentrations in ostriches were not linearly associated with age.
(9) But between the ostriches who want to retain the status quo and those radicals who want to lead an exodus is an interesting, and fertile, ground.
(10) He ended his life as unknowable and contrary as the 22-year-old who made Do the Ostrich.
(11) Binding and spectroscopic properties of ostrich neurophysins were examined with emphasis on the behavior of Tyr-35, a residue that provides a potential probe of the monomer-monomer interface and of allosteric interrelationships between this region and the binding site.
(12) Young ostriches had significantly lower concentrations of hematocrit, hemoglobin concentration, calcium, and magnesium, and higher levels of total protein and potassium, than the adult individuals.
(13) The complete amino acid sequence of chicken ACTH (39 residues) has been determined as NH2-Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val-Gly-Arg-Lys-Arg- Arg- Pro-Ile-Lys-Val-Tyr-Pro-Asn-Gly-Val-Asp-Glu-Glu-Ser-Ala-Glu-Ser-Tyr-Pro- Met-Glu-Phe-OH Strikingly the amino acid sequence of chicken ACTH shows a closer resemblance to that from an amphibian, Xenopus (3 residue substitution) than that from another bird, the ostrich (7 residue substitution) or the turkey (at least 9 residue substitution).
(14) The different homogeneous ostrich neurophysin fractions so obtained were compared i.t.o.
(15) It is likely that these two forms of GnRH are present in all bird species, since the chicken and the ostrich have evolved separately.
(16) Facebook Twitter Pinterest Dress of dyed ostrich feathers and hand-painted microscopic slides.
(17) The extent of reassociation of 3H-labeled repetitive or single copy DNA sequences from the chicken with excess unlabeled DNA from the duck, the Japanese quail, and the ostrich, respectively, was measured by hydroxylapatite chromatography.
(18) This study also demonstrates that the ostrich copeptin is more closely related to the amphibian copeptin sequence than to its mammalian homologue, leading to the hypothesis that two families of copeptin molecules might exist.
(19) Rex Hunt, fully dressed in his governor's tights and ostrich plumes, was widely seen, not least by toffs in the Foreign Office (FCO), as a slightly Wodehousian figure, the kind more likely to be seen in slacks propping up the golf club bar in a colonial outpost.
(20) The effect of calcium ions and enzyme concentration on the rate of self-digestion of ostrich trypsin was also investigated.
Ratite
Definition:
(a.) Of or pertaining to the Ratitae.
(n.) One of the Ratitae.
Example Sentences:
(1) In ducks and ratite birds, lymph heart myocytes more slowly but progressively differentiate a cytomorphology that does not conform in all characteristics to cardiac or skeletal muscle and even resembles in some aspects, smooth muscle.
(2) Although the phylogeny of Ratites is disputed, in particular their possible common origin with Carinates, which include most of the living birds, species of the first sub-class seem to have the same neurohypophysial hormones as those of the second.
(3) We have enzymatically amplified and sequenced approximately 400 base pairs of the mitochondrial 12S rRNA gene from bones and soft tissue remains of four species of moas as well as eight other species of ratite birds and a tinamou.
(4) Two groups of flightless ratite birds existed in New Zealand during the Pleistocene: the kiwis and the moas.
(5) These data support the theory that the ancestors of penguins were flying oceanic birds and that flightlessness in penguins has evolved independently from flightlessness in ratites.
(6) In juvenile ducks and ratites some myocytes differentiate to conductile cells, much as the conductile myocytes and myofibers of the blood heart.
(7) Osteocalcin (the 6,000 dalton Mr gamma-carboxyglutamate-containing protein of bone) has been detected in acid extracts of bones of the extinct class of New Zealand ratite birds, the moas, using a radioimmunoassay for sheep osteocalcin.
(8) This is similar to the pattern shown by ratite birds, where the decline period may be variable and facilitates hatching synchrony.
(9) Ultrastructural investigations of avian cardiac muscle, including ratite hearts, have provided great insights into the mechanisms as to how excitation leads to contraction in the heart.
(10) Alignment of the N-terminal sequence of osteocalcin from the extinct moa against the osteocalcins of the extant ostrich, rhea and emu reveals the homology amongst the ratite species is greater than the homology with the chicken osteocalcin.
(11) Ratites or paleognathid birds may have a different brain-to-metabolism association.
(12) To explain the current geographic distribution of ratites and the magnitude of the transferrin distances, it is supposed that the ancestors of these flightless birds walked across land bridges between the southern continents during Cretaceous times.
(13) These predictions seem to hold well for published data on the development of eggs of fish and ratite, precocial and altricial birds.
(14) Metallic proventricular foreign bodies are a potential source of heavy metal poisoning in ratites.
(15) A biochemical approach was used to study the evolution of ratite birds, i.e., the ostriches, rheas, cassowaries, emus, and kiwis.
(16) Quantitative immunological comparison of transferrin from ratites, tinamous, and other flying birds indicates that all the ratites and tinamous are allied phylogenetically and that they are of monophyletic origin relative to other birds.
(17) Osteocalcin the major gamma carboxyglutamic acid containing protein of vertebrate bone has been purified from the bones of a specimen of Pachyornis elephantopus, a species of the extinct class of New Zealand ratite birds, the moas.
(18) The study of the ratite conduction fibers bears out the idea of an inverse relationship between the size of the gap junctions and the input resistance of cardiac cells.
(19) The geometry of the conduction fibers of ratite hearts confirms earlier observations on birds showing that the geometry of the conduction system and its component cells is adapted to hearts of different sizes and rates of contraction so as to maintain a differential in conduction velocities between the conduction system and the working fibers.
(20) Thus, New Zealand probably was colonized twice by ancestors of ratite birds.