(1) If a cercus is rotated and grafted back into its own socket, it back-rotates towards its original orientation in succeeding molts.
(2) (2) It was also observed that the projection of cercal sensory fibers in specimens reared with a single cercus differed from normal in that scattered fibers cross the midline in regions of the ganglion where none usually exist.
(3) Both of these interneurons receive excitatory synaptic input from the sensory cells of the nine most prominent columns (a, d, g, f, h, i, k, l, and m) of filiform hairs of the ipsilateral cercus.
(4) The interneurons of three groups of animals were examined; control specimens which were not treated surgically, unilaterally treated specimens which had a single cercus removed and bilaterally treated specimens which had both cerci removed.
(5) The principal afferent input to two identified interneurons was removed by surgically ablating an abdominal sensory appendage, the cercus.
(6) This is due in part to faciliation of an inhibitory synaptic input which is activated by the control cercus.
(7) The most obvious correlate of arbor type is the circumferential position of the hair on the cercus.
(8) It was found that 3 neurons from this system receive the main bulk of excitatory impulsation from the ipsilateral cercus, and only 1 of them--from the contralateral one.
(9) This continuing flexibility of the axonal arbor could also be demonstrated by allowing the amputated cercus to regenerate (Figs.
(10) Passive movements of a cercus, monitored with a position transducer, show that the PAD unit fires discrete bursts during cercal displacement.
(11) The wild-type cercus has two hairs, one lateral (L) and the other medial (M), each with an underlying sensory neuron.
(12) The cercus of the first instar cockroach, Periplaneta americana, bears two filiform hairs, lateral (L) and medial (M), each of which is innervated by a single sensory neuron.
(13) Signal processing in the proposed neural circuit is equivalent to the signal direction estimation by projecting the vector of velocity on the two stable basic directions whose orientations do not change when symmetrical changes in cercus positions occur.
(14) When axons of the sensory neurons were transected during larval development, the cell bodies and the soma-bearing portion of axons, which are located within the cercus, survived but lost their excitability for 9-10 days.
(15) Column "h" afferents were chosen because they make a large contribution to the receptive fields of GIs 1 and 2 after ablation of the contralateral cercus.
(16) The major input to these GIs is from the cercus on the axon side; when this cercus is ablated in the last instar before the adult stage, input from the other cercus becomes more effective within 30 days (Vardi and Camhi, 1982b).
(17) Neural activity in the cercal-to-giant interneurone system was lowered by blocking the movement of the mechanosensitive hairs, located on each cercus, with a facial cleansing cream.3.
(18) First, they had directional sensitivities which were appropriate to their location on the cercus; receptors of this directionality would never be made by the donor tissue if left in its original position.
(19) We have discovered mutant animals that have more hairs on the cercus; the most typical phenotype, called "Space Invader" (SI), has an extra filiform hair in a proximo-lateral position on one of the cerci.
(20) An attempt is made to relate the distribution of filiform hairs on the cercus of the second instar cockroach, Periplaneta americana, to the morphology and patterns of synaptic connectivity of their afferents.
Cereus
Definition:
(n.) A genus of plants of the Cactus family. They are natives of America, from California to Chili.
Example Sentences:
(1) Phospholipase C from Bacillus cereus was purified to homogeneity as judged by analytical and sodium dodecyl sulphate disc gel electrophoresis and by immunoelectrophoresis.
(2) Renal dipeptidase (dehydropeptidase-I, EC 3.4.13.11) was released from pig kidney membrane preparations by treatment with phosphatidylinositol-specific phospholipase C from Staphylococcus aureus and Bacillus thuringiensis and a phospholipase C preparation from Bacillus cereus to a similar extent as alkaline phosphatase.
(3) The sera were used to type 137 isolates of B. cereus from 34 British and Australian incidents of food poisoning associated with the consumption of cooked rice.
(4) The effect of a selected group of metabolic inhibitors on the autolytic system of B. cereus and E. coli has been examined.
(5) In one case the keratitis was caused by Bacillus cereus.
(6) The gene coding for oligo-1,6-glucosidase from Bacillus cereus ATCC7064 has been overexpressed in Escherichia coli MV1184 cells under the control of the lac promoter in the genetically engineered plasmid pBCE4-2.
(7) In a review the author describes the most important exoproducts of strains of Bacillus cereus which contribute to its pathogenicity.
(8) We investigated the enzymatic properties of phosphatidylinositol-specific phospholipase C (PI-PLC) from Bacillus cereus towards glycosyl-phosphatidylinositol anchored acetylcholinesterase (AChE) from bovine erythrocytes and Torpedo electric organ as substrate.
(9) Suspensions of Pseudomonas aeruginosa and Bacillus cereus were continuously sparged with nitrogen to remove gaseous products of nitrate reduction.
(10) The infection of Bacillus thuringiensis, B. cereus, B. mesentericus and B. polymyxa strains with temperate E. coli bacteriophage Mu cts62 integrated into plasmid RP4 under conditions of conjugative transfer is shown possible.
(11) Residues were assayed by a microbiological agar diffusion method, with Bacillus cereus as test-organism.
(12) The test is presumptive in that differentiation of B. cereus (and closely related organisms) from other species is based on the formation of turbidity in the agar surrounding the colonies of the cereus group organisms.
(13) Growth of and enterotoxin production by psychrotrophic B. cereus could be prevented by temperatures below 4 degrees C and pH-values not exceeding 5.0.
(14) Since KG agar enhances spore formation by B. cereus, thus permitting early serological testing, its use in screening food products is advocated.
(15) A change in interaction with spores of Bacillus cereus occurred in the range of critical concentrations of micelle formation.
(16) Spores of Bacillus cereus contain a similar toxin although the specific activity is much lower than the spores of B. thuringiensis.
(17) Phospholipase C from Bacillus cereus led to a strong hyperpolarization and a fall in membrane resistance.
(18) The crystal structure of the neutral protease from Bacillus cereus has been refined to an R factor of 17.5% at 0.2-nm resolution.
(19) Suspensions of Bacillus cereus T, B. subtilis, and B. pumilus spores in water or potassium phosphate buffer were germinated by hydrostatic pressures of between 325 and 975 atm.
(20) Volatiles caused increased growth of Pseudomonas fluorescens, Bacillus cereus, Erwinia carotovora, Agrobacterium tumefaciens, A. radiobacter, Rhizobium japonicum, Mucor mucedo, Fusarium oxysporum f. conglutinans, Trichoderma viride, and Penicillium vermiculatum but not of Sarcina lutea, Serratia marcescens, Chaetomium globosum, or Schizophyllum commune.