(1) At midclimax, adult and larval RBCs were separated on a Renografin continuous density gradient.
(2) Replication patterns of the larval salivary gland chromosomes were compared after pulse labeling with 3H-thymidine and autoradiography.
(3) Larvae of both mutants also excrete 3H-3-hydroxykynurenine and 3H-kynurenine rapidly, which probably accounts for the normal levels of kynurenine during larval life.
(4) These data suggested that an inter-thymic exchange of cells did not occur during larval life.
(5) The test is based on the ability of larvae to freely migrate through selected mesh sizes of nylon sieves and the reduced ability of larvae to migrate after preincubation with, and in the presence of, substances that inhibit or reduce larval motility.
(6) During the first 15 to 20 min of metamorphosis the larval arms are retracted and resorbed into the aboral surface of the juvenile.
(7) Dose-response experiments showed that lower concentrations of both ivermectin and closantel were not as effective in reducing larval growth.
(8) Skin grafts from Xenopus isogeneic to the donors of the MHC-incompatible larval and adult thymus implants are always tolerated by Tx hosts.
(9) pipiens disappeared in larval habitats by December but An.
(10) Radioimmunoassay using this antibody showed that these proteins are induced in the hemolymph in response to injury of the larval body wall.
(11) We detail the fatty acid compositions of last larval instars of two lepidopterans, Spodoptera frugiperda and Trichoplusia ni, two tissues from T. ni, a cell line derived from each species and the respective larval and cell culture media.
(12) Larval growth in vitro was significantly inhibited by alpha 2M and AT III (P less than 0.05) when compared to albumin controls but was not affected by alpha 1PI.
(13) Therefore, in the cricket cercal sensory system, both regeneration of the central synapses following axotomy of the presynaptic sensory neurons and the normal rearrangement of connectivity during larval development appear not to require axonal action potentials.
(14) The histochemical activities of succinic dehydrogenase (SDH) and Ca++-activated ATPase (pHs 7.4 and 9.4) were studied in the larval tail musculature of Rana japonica, Rana catesbeiana and Rana ornativentris.
(15) The heads were examined for adult and larval meningeal worms (Parelaphostrongylus tenuis) by physical examination of the brain surfaces, and the Baermann technique, respectively, and for ear mites by examination of ear scrapings.
(16) Adhfn46 adults and larvae accumulate abundant ADH-like distal (adult) and proximal (larval) transcripts that are shorter than transcripts in wild-type flies by a lesion located in the second ADH protein-coding exon.
(17) Larval populations from the three rivers were genetically distinct.
(18) The seasonal abundance pattern of larval I. persulcatus on four small mammal species appears as a bimodal peak (June and September), but nymphal I. persulcatus has a monomodal peak during spring.
(19) The neotenic urodelan amphibian species model represents actually the only model in which the coexistence of larval (or neonatal) and adult heavy chains is maintained throughout life in adults.
(20) Modifications have also arisen in proportions of the embryo fated to become various cell types and larval structures.
Scute
Definition:
(n.) A small shield.
(n.) An old French gold coin of the value of 3s. 4d. sterling, or about 80 cents.
(n.) A bony scale of a reptile or fish; a large horny scale on the leg of a bird, or on the belly of a snake.
Example Sentences:
(1) The number of the long thoracic chaetae of heterozygote females born from crosses between a scute stock and various wild strains can be less than eight.
(2) Immunocytochemical studies demonstrate that the achaete-scute and daughterless genes are required for proper expression of cpo in the PNS but not in other cells that express cpo.
(3) These and other data suggest that the excess function phenotypes of Hw mutations are generated by an increase in achaete or scute transcripts.
(4) Surprisingly, we also find that the level of achaete-scute activity influences the level of hairy expression, thereby providing feedback control upon achaete-scute activity and sensory organ formation.
(5) The scutes were ingested during a period of neglect by the owner.
(6) Although different at their 3' untranslated regions, both cDNAs predict a protein with primary amino acid sequence homology to the previously described amphipathic helix-loop-helix DNA binding and dimerization motif of the Ly1-1, myc, MyoD, immunoglobulin enhancer binding, daughterless, and achaete-scute families of genes.
(7) We have determined the nucleotide sequence of two genes of the achaete - scute complex (AS-C) and show that they are homologous to two previously sequenced members of the same locus.
(8) All three encode a sequence similar to one of the conserved domains of representatives of the vertebrate myc gene family which is also present in the deduced protein sequences of the Drosophila achaete-scute gene complex.
(9) The pro-neural class of genes, for example, the achaete-scute complex, participates in the initial decision to make each uniquely positioned neuroblast or sensory organ, but are initially expressed in groups of cells.
(10) However, replacing the basic region of MyoD with the analogous sequence of other HLH proteins (the immunoglobulin enhancer binding E12 protein or T4 achaete scute protein) allows DNA binding in vitro, yet abolishes muscle-specific gene activation.
(11) The predicted protein product of the lyl-1 gene contains a potential helix-loop-helix DNA binding motif also found in several proteins involved in the control of cellular proliferation and differentiation: all members of the Myc family, MyoD1, myogenin, the Drosophila achaete-scute, twist, and daughterless proteins, and two recently described immunoglobulin enhancer binding proteins.
(12) According to these and previous data, the AS-C is organized, distally to proximally, as follows: the achaete region, with most of its DNA (10 kb) located upstream from the putative achaete (T5) gene; an intermediate region, approximately 18 kb long, whose deletion only weakly affects the scute function; and the scute region, with most of the DNA critical for its function extending 4-5 kb upstream and 50 kb downstream of the putative scute (T4) gene.
(13) Essentially, the double alterations of yellow and scute phenotypes constitute more than 40% of all derivatives.
(14) The achaete-scute T3 and MyoD proteins do not form kappa E2-binding heterodimers together, and no active complex with N-myc was evident.
(15) The achaete and scute mutations lead to reduction of bristles and hairs on head and thorax.
(16) The need for the technique was motivated by a study describing longitudinal growth data from the annuli on abdominal scutes of groups of western painted turtles.
(17) Family selection for directional asymmetry in the expression of the Drosophila melanogaster mutant scute had no result.
(18) The deduced amino acid sequence of clone Myf-5 reveals a region which is highly similar to myc proteins and the developmental factors from Drosophila encoded by the achaete scute locus and the twist gene.
(19) We have confirmed this model by showing that misexpression of the achaete-scute T4 gene induces ectopic Sxl expression and male-specific lethality, confirming that achaete-scute T4 is the sisterless-b counting element.
(20) In the mutants, neuronal precursor cells do not differentiate, suggesting that Hairless might be involved in specifying or realizing neuronal fate in the fly, similar to the 'pro-neural' genes of the achaete-scute complex.