(n.) A genus of Monotremata found in Australia, Tasmania, and New Guinea. They are toothless and covered with spines; -- called also porcupine ant-eater, and Australian ant-eater.
Example Sentences:
(1) In the echidna a few dark, organelle-rich glia cells were encountered.
(2) This study provides anatomical evidence for the presence of cone-like photoreceptors in the retina of the echidna.
(3) This is a report of experiments which provide evidence in support of the existence of an electric sense in the echidna, or spiny anteater Tachyglossus aculeatus.
(4) Echidna Mb, which has one replacement (Glu-59 to Ala) within region 56-62, displayed greatly reduced cross-reactivities and relative binding affinities.
(5) Echidna band A protein has some similarity to high cystine "whey" proteins.
(6) The concentration of pituitary LH is in the range of that found in eutherian mammals, but the concentration of ACTH is lower than that reported for other vertebrates, and this may be linked causally with the remarkably low rate of corticosteroid secretion in the echidna.
(7) The presence of two lysozyme variants, echidna lysozyme I and II, has been confirmed in mature milk samples of Tachyglossus aculeatus multiaculeatus and Tachyglossus aculeatus aculeatus respectively.
(8) There is a wide disparity in growth rates of echidna young that is related to differences in the body weights of the mothers.
(9) At the time of publishing the list stands at 244, including, but certainly not limited to: disturbed balance; blurred vision; cataracts; mass bee extinction; unexplained deaths of cattle, goats, dolphins, worms and sundry other animals; family discord; disoriented echidnas; social problems among peacocks; and eggs without yolks.
(10) The gross anatomy and nerve supply of the bill of echidna (Tachyglossus aculeatus) is described in relation to its function as an outstanding sensory organ.
(11) Within the rostral one centimetre of the Echidna beak, three specialised receptors were found: a mucous sensory gland, a rod-like structure, and an innervated epidermal pit.
(12) The cells of the secretory tubules in the mandibular gland of the echidna are packed with fairly large birefringent granules, which show a lamellated structure consisting of alternating thin and thick layers or shells of protein.
(13) Adult Aponomma concolor were able to locate their mammalian host (echidna) from distances greater than 3 reptile-infesting species could locate their hosts.
(14) Generally there are more changes between beta-chains; there are only three other examples reported where there are more changes between alpha-chains than beta-chains, these are of echidna, rabbit and dog globins.
(15) Maturation of spermatozoa in the Wolffian duct of the echidna appears to be expressed only in a changing capacity for motility and in loss of the cytoplasmic droplet.
(16) The karyotype of the platypus (2n = 52) has several features in common with those of the echidna species; six pairs of large autosomes, many pairs of small (but not micro-) chromosomes, and a series of small unpaired chromosomes which form a multivalent at meiosis.
(17) Neurohypophysial hormones of platypus seem similar to those of echidna, the other living prototherian, and to those of most placental mammals.
(18) The same properties make this formation different from the anterodorsal and anteroventral nuclei in rats, the equivalents of which could not be identified in echidnas.
(19) An additional nine live echidnas were presented for clinical examination for dog or fox wounds (eight), or wire snare wounds (one).
(20) Statistical comparison of amino acid composition of the component chains with other immunoglobulin heavy chains suggests that echidna gamma chains are more closely related to eutherian gamma chains than to the 7S Ig heavy chains from amphibia or aves.
Platypus
Definition:
(n.) The duck mole. See under Duck.
Example Sentences:
(1) A 57-year-old man was envenomated via two spur wounds to the right hand from each hind leg of a male platypus.
(2) Recommendations are made to improve the survival of platypuses in captivity.
(3) It is as peaceful as a platypus playing with a potato pudding.” In 2007 Levy published Love and Sex with Robots , a book that one USA Today critic found “troublingly arousing”.
(4) Of 213 platypuses that died in captivity, 81.7% had died within 1 year; most within the first month.
(5) These findings suggest that the spleen is the primary hemopoietic organ in the platypus.
(6) Within the distinctive platypus beak, the animal had rows of sharp teeth, which scientists believe they used to slice and chew crayfish, frogs and small turtles.
(7) #Bellfie by Matt Collins, managing director at Platypus Digital The big craze for 2015 will be the #bellfie.
(8) The intestinal mucosa of the platypus takes the form of numerous transverse surface folds.
(9) These include animal embryos – platypus and wallaby – and specific body parts of other mammals, such as the arm of a koala.
(10) The most conspicuous features are: 1) although no protein casts are found in the tubular lumina, epithelial cells of the proximal convoluted tubule (PCT) have numerous electron-dense vesicles as in human nephrotic kidneys; and 2) the platypus Henle's loop consists of the thick epithelial cells similar to the mammalian type nephron of birds.
(11) Afferent responses were recorded from filaments of the trigeminal nerve in each of two platypuses (Ornithorhynchus anatinus) anaesthetized with alpha-chloralose.
(12) Two neurohypophysial peptides have been purified from acetone desiccated posterior pituitary glands of the platypus (Ornithorhynchus anatinus) by molecular sieving and high-pressure liquid chromatography.
(13) The karyotype of the platypus (2n = 52) has several features in common with those of the echidna species; six pairs of large autosomes, many pairs of small (but not micro-) chromosomes, and a series of small unpaired chromosomes which form a multivalent at meiosis.
(14) Neurohypophysial hormones of platypus seem similar to those of echidna, the other living prototherian, and to those of most placental mammals.
(15) The ratio of the contents of the two major mammalian ganglioside fractions GD1a and GT1b is generally in the range of 1.0 and even higher; in the heterothermic platypus from the monotremes and in hibernators among the placental mammals, however, it is much lower (about 0.8).
(16) As compared to those of other mammals such as humans and rats, our observations suggest that the platypus kidney is less developed, in terms of evolution.
(17) The platypus X chromosome, identified by the presence of two copies in females and one in males, has been found to possess a suite of genes that have been mapped to the X chromosomes of all eutherian and metatherian mammals.
(18) To describe in detail for the first time, the clinical course and medical management of a significant human envenomation by the Australian platypus (Ornithorhynchus anatinus).
(19) Methods used included SEM of methacrylate casts of marsupial enamel tubules, worn and cut surfaces of whole marsupial teeth, developing and erupted platypus teeth, and a well-developed molar of the newly discovered Miocene ornithorhynchid Obdurodon sp., and tandem scanning reflected light microscopy of intact marsupial teeth.
(20) The generation of blood cells has been observed in the spleen and in the bone marrow of the platypus.