(a.) Two-threaded; involving the use of two threads; as, bifilar suspension; a bifilar balance.
Example Sentences:
(1) Cells were incubated for at least three doublings to approximate bifilar substitution.
(2) The disappearance of bifilar enzyme-sensitive sites was found to be normal in cells from individuals with Fanconi's anemia, Cockayne's syndrome, dyskeratosis congenita and the variant form of xeroderma pigmentosum.
(3) DNA sequence analysis revealed the presence of closely opposed runs of pyrimidines at sites of more frequent bifilar cleavage.
(4) Cells that contain only unifilar BrdUrd-DNA are resistant to black light, whereas cells that contain bifilar BrdUrd-DNA are extremely photosensitive.
(5) Chinese hamster chromosomes were differentially substituted with 50 microM 5-bromodeoxyuridine (BrdU) to obtain chromosomes with bifilarly and unifilarly substituted (BB-TB) and unifilarly and non-substituted (TB-TT) chromatid constitutions.
(6) The rate of bifilar enzyme-sensitive site removal in XP cells assigned to complementation group C was reduced by an amount similar to that observed for the repair of isolated dimers.
(7) We propose that during the HB pretreatment, more DNA-protein cross-linkings are induced in BrdU bifilarly substituted than the unifilarly substituted chromatids.
(8) Cesium chloride equilibrium gradient centrifugation provides estimates both of the percent thymidine replacement by BrdUrd and of the symmetry (unifilar versus bifilar) of BrdUrd incorporation into the chromosomal DNA duplexes.
(9) We attribute this differential contrast primarily to the lesser condensation of the bifilarly substituted chromatid.
(10) The greater the percentage BrdU substitution, the larger was the enhancement ratio for survival and radiation-induced strand breaks in both monofilarly and bifilarly substituted cells.
(11) This dense DNA has been previously interpreted as being bifilarly substituted with BrdU and hence evidence that sister chromatid exchange (SCE) formation proceeds via the Holliday model of recombination.
(12) and SSC treatment together resulted in differentiation, with dark-staining unifilarly (TB) chromatids in the LM corresponding to raised loosely packed loops in the SEM and pale bifilarly (BB) chromatids corresponding to the smooth compact flattened SEM appearance.
(13) The degree of radiosensitization for both survival and rates of alkaline and neutral elution are dependent on percentage BrdU substitution and independent of whether BrdU is in one strand only (monofilar) or both strands (bifilar) of the DNA duplex: e.g., for 16% BrdU substitution distributed either monofilarly or partially bifilarly, there is an enhancement factor for Do of 1.55.
(14) Using filter elution techniques, the enhancement ratios (ER) for double strand breaks (SB) were 1.5 and 2.0 for unifilar and bifilar substitution, respectively, whereas the enhancement ratio for single strand breaks were both greater than or equal to 2.1.
(15) After staining with Giemsa, unifilarly BrdU-substituted chromatids stained faintly and bifilarly substituted chromatids stained darkly.
(16) The bifilarly substituted chromatid is dramatically longer than the unifilar one.
(17) Double-wrapping, or systems of bifilar windings, can also help control for the non-magnetic effects of the electric coils used in many experiments.
(18) The density of spikes of spike output (SO) recorded by means of three bifilar semimicroelectrodes simultaneously implanted in the biceps brachii has been studied during elbow flexions performed against inertia and with a variable velocity (anisometric, anisotonic contractions).
(19) The comparison of ssb, dsb, and uracil production in bifilar and monofilar DNA with similar BU substitution showed no significant difference between the two DNA systems (ColE 1, M 13), indicating that the location of BU molecules in one or in both DNA strands will not lead to a different number of lesions after UV313 exposure.
(20) These studies showed that the "twisted tubule" which makes up the neurofibrillary tangle in many pathological situations is a bifilar helix made up of 130 A filaments.
Thread
Definition:
(n.) A very small twist of flax, wool, cotton, silk, or other fibrous substance, drawn out to considerable length; a compound cord consisting of two or more single yarns doubled, or joined together, and twisted.
(n.) A filament, as of a flower, or of any fibrous substance, as of bark; also, a line of gold or silver.
(n.) The prominent part of the spiral of a screw or nut; the rib. See Screw, n., 1.
(n.) Fig.: Something continued in a long course or tenor; a,s the thread of life, or of a discourse.
(n.) Fig.: Composition; quality; fineness.
(v. t.) To pass a thread through the eye of; as, to thread a needle.
(v. t.) To pass or pierce through as a narrow way; also, to effect or make, as one's way, through or between obstacles; to thrid.
(v. t.) To form a thread, or spiral rib, on or in; as, to thread a screw or nut.
Example Sentences:
(1) Use 3-ml Luer-Lok syringes and 30-gauge needles and thread the needle carefully into the vessel while using slow and steady injection with light pressure.
(2) No infection threads were found to penetrate either root hairs or the nodule cells.
(3) When using a nylon thread for the attachment of a pseudophakos to the iris, it may happen that the suture is slung tightly around the implant-lens.
(4) This thread ran through his later writings, which focused particularly on questions of the transformation of work and working time, envisaging the possibility that the productivity gains made possible by capitalism could be used to enhance individual and social life, rather than intensifying ruthless economic competition and social division.
(5) Santi Cazorla, Sánchez and Mesut Özil were all involved, and when the ball came back to Cazorla he made a fine threaded pass to Walcott.
(6) We've brought on two experts to answer your questions from 1-2pm BST in the comment thread on this article.
(7) The astrocytes had generally two types of processes: (1) thread-like processes of relatively constant width with few ramifications and few lamellar appendages and (2) the sinuous processes with clusters of lamellar appendages.
(8) Electron microscopy showed the presence of bacterial ghosts and protein threads.
(9) George RR Martin , whose series of novels inspired the HBO drama , has woven a tapestry of extraordinary size and richness; and most of the threads he has used derive from the history of our own world.
(10) The left anterior descending coronary artery of dogs and the right common carotid artery of rabbits were subjected to partial constriction with suture thread (40-60% reduction in transluminal diameter).
(11) Neuronal thread protein is a recently characterized, approximately 20-kd protein that accumulates in brains with Alzheimer's disease (AD) lesions.
(12) Small threaded pins do not cause femoral head rotation.
(13) Nematocyst capsules and everted threads from both species contained levels of glycine and proline-hydroxyproline characteristic of vertebrate collagens.
(14) Load transfer from ring to bone is concentrated at the first and last threads where the subchondral bone layer is penetrated.
(15) Furthermore, large numbers of neuropil threads are scattered throughout the nuclear gray.
(16) The histological findings of actinomyces spores, thread-like foreign material and detritus drew out attention to the rare manifestation of abdominal actinomycosis.
(17) Monofilament nylon threads are used as drains in free skin grafting; 2-0 or 3-0 nylon threads are usually applied.
(18) Monoclonal antibodies, raised independently in two laboratories against either pancreatic stone protein (PSP) or pancreatic thread protein (PTP), reacted with the Mr 14,000 protein(s).
(19) With the initial technique, the gastrostomy tube was pulled in by a thread introduced percutaneously into the stomach.
(20) P19 gave by proteolysis a protein of 14 KD (P14), at first named protein X and also called pancreatic thread protein or pancreatic stone protein.