What's the difference between chimera and echidna?

Chimera


Definition:

  • (n.) A monster represented as vomiting flames, and as having the head of a lion, the body of a goat, and the tail of a dragon.
  • (n.) A vain, foolish, or incongruous fancy, or creature of the imagination; as, the chimera of an author.

Example Sentences:

  • (1) The other chimeras accumulated in the plasma membrane, and truncated LEP100 was secreted.
  • (2) The bone marrow derivation of dThy-1+EC is now well established: dThy-1+EC carry Ly-5 determinants whose expression is restricted to cells of the hemopoietic differentiation pathway, and studies using Thy-1-disparate radiation bone marrow chimeras have revealed the presence of donor-type Thy-1+ cells within the epidermis; by immunoelectron microscopy, these cells represent dThy-1+EC.
  • (3) Complex I (19S) consists of gRNA, TUTase, RNA ligase and chimera-forming activity.
  • (4) Direct immunofluorescence tests for chicken IgG were positive in spinal cords of most SS chimeras but only of some LS chimeras.
  • (5) Tests on five different blood chimeras showed the T- and B-lymphocyte chimerism to be the same.
  • (6) The peak of GvH foci response occurred near the end of the 1st week when 70% of 950 R-RSp chimera spleens examined contained an average of 18 to 21 foci per spleen.
  • (7) In control chimeras, the mean ratio of the unlabeled cells:total chimera cell number (henceforth referred to as "mean ratio") was 0.50 with little or no weekly variation over the 9-week experimental period.
  • (8) Purified parental strain T cells prepared from unprimed chimeras were exposed to sheep erythrocytes in heavily irradiated mice of each of the two parental strains and recovered from thoracic duct lymph of the recipients at either day 1 or day 5 posttransfer.
  • (9) The quail-chick chimera method was used to examine whether neural crest cells were associated with the formation of semilunar valves.
  • (10) For this chimera, no residual [125I] hCG binding was observed in a range of 2 pM to 10 nM.
  • (11) All the bone marrow chimeras as well as allophenic mice with less than 20% Fv-2ss red cells failed to develop any of the symptoms of Friend disease after infection with the polycythemic strain of Friend virus.
  • (12) All surviving mice were complete donor-type chimeras.
  • (13) Highly increased survival was obtained for [B6 lpr----B6 nu, lpr] chimeras, but not for [B6+----B6 nu, lpr] and [B6 nu----B6 nu, lpr] chimeras.
  • (14) In chimeras the skin grafts of both parental types survive.
  • (15) The affinities of the anti-chimera antibodies for the B cell epitope were assessed by a fluid-phase double-isotope radioimmunoassay.
  • (16) The role of stimulated T cells in the induction of B mitoses was shown by (a) the incapacity of T-depleted spleen cells to be stimulated by PHA or in primary or secondary MLC, and (b) the restoration of the mitotic response of B cells to PHA by adding to the T cell-depleted culture either a very small number of T cell (identified by their different karyotype: "in vitro chimeras") or the cell-free supernatant of a 24 hr MLC.
  • (17) In contrast, chimeras made by reconstituting irradiated A mice with adult spleen cells of (A X B)F1 origin generate virus-specific cytotoxic activity for infected A and B targets, suggesting that mature T cells do not change their self-specificity readily.
  • (18) The resulting chimera can be expressed at high levels in Escherichia coli and is readily purified.
  • (19) The Chimera grid was used to avoid a grid with highly skewed cells.
  • (20) Complicating allogeneic effects were minimized or avoided by the use of helper T cells from normal F1 hybrids, parent leads to F1 chimeras, and F1 leads to parent chimeras.

Echidna


Definition:

  • (n.) A monster, half maid and half serpent.
  • (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.