(n.) The act of joining, or the state of being joined; union; combination; coalition; as, the junction of two armies or detachments; the junction of paths.
(n.) The place or point of union, meeting, or junction; specifically, the place where two or more lines of railway meet or cross.
Example Sentences:
(1) The findings clearly reveal that only the Sertoli-Sertoli junctional site forms a restrictive barrier.
(2) Thus adrenaline, via pre- and post-junctional adrenoceptors, may contribute to enhanced vascular smooth muscle contraction, which most likely is sensitized by the elevated intracellular calcium concentration.
(3) Linear and annular gap junctions between neighbouring cells were present, particularly in Group 1.
(4) The family comprises at least three variable (V) gene segments, three constant (C) gene segments, and three junction (J) gene segments.
(5) Intraepidermal clefting starts at the junction between the basal and epidermal layers, and later involves all of the levels of the stratum spinosum.
(6) The actions of the polyvalent cationic dye Ruthenium Red and the enzyme neuraminidase were studied at the frog neuromuscular junction.
(7) Circular muscle strips from the opossum esophageal body obtained 3-5 cm above the esophagogastric junction were suspended in organ baths for measurement of isometric tension.
(8) There is approximately a 25% decrease in aggregation from regions of the rib distal to the metaphyseal-growth plate junction (69%) to the region proximal to it (50%).
(9) Whereas the tight junctions of endoneurial capillaries are known to prevent certain blood-borne substances from entering the endoneurium, it was not clear whether the permeability of the pulpal capillaries, which are distant from the nerve fibres, could affect the nerve fibre environment.
(10) In contrast, newly formed secondary myotubes are short cells which insert solely into the primary myotubes by a series of complex interdigitating folds along which adhering junctions occur.
(11) The junctional currents were already constant 1 ms after step changes in the junctional voltage; this was three orders of magnitude faster than the other known examples of voltage-controlled gap junctions between embryonic cells.
(12) Three cases of simultaneous atrial and a-v junctional tachycardia, related to the administration of digitalis and occurring in a short period of 16 months, are reported.
(13) In junctions, 3' PSS termini are preserved by fill-in DNA synthesis, although their 5' recessed ends cannot serve as a primer.
(14) It is therefore suggested that salt water adaptation triggers a cellular reorganization of the epithelium in such a way that leaky junctions (a low resistance pathway) appear at the apex of the chloride cells.
(15) At the adult neuromuscular junction, acetylcholine (ACh) receptors are highly localized at the subsynaptic membrane, whereas, embryonic myotubes before innervation have receptors distributed over the entire surface.
(16) The normal anatomical position of the point of junction of the superficial cerebral veins with the superior sagittal and transverse sinuses of the rat was studied with an analytical mathematical method.
(17) Histological examination showed that in many cases these terminal sprouts appeared to reinnervate abandoned junctional sites on adjacent denervated fibers.
(18) In vivo, the ability of an AChR clustering stimulus to depress cluster formation elsewhere on the muscle cell may influence both the site at which the neuromuscular junction develops as well as which axons survive during synapse elimination.
(19) Immunofluorescence and immunoelectronmicroscopy experiments demonstrated that while tight junctions demarcate PAS-O distribution in confluent cultures, apical polarity could be established at low culture densities when cells could not form tight junctions with neighboring cells.
(20) PTH, an inducer of shape change, did not affect the number of gap junctions appreciably.
Span
Definition:
() imp. & p. p. of Spin.
(v. t.) The space from the thumb to the end of the little finger when extended; nine inches; eighth of a fathom.
(v. t.) Hence, a small space or a brief portion of time.
(v. t.) The spread or extent of an arch between its abutments, or of a beam, girder, truss, roof, bridge, or the like, between its supports.
(v. t.) A rope having its ends made fast so that a purchase can be hooked to the bight; also, a rope made fast in the center so that both ends can be used.
(v. t.) A pair of horses or other animals driven together; usually, such a pair of horses when similar in color, form, and action.
(v. t.) To measure by the span of the hand with the fingers extended, or with the fingers encompassing the object; as, to span a space or distance; to span a cylinder.
(v. t.) To reach from one side of to the order; to stretch over as an arch.
(v. t.) To fetter, as a horse; to hobble.
(v. i.) To be matched, as horses.
(imp.) of Spin
Example Sentences:
(1) In addition, DDT blocked succinate dehydrogenase and the cytochrome b-c span of the electron transport chain, which also secondarily reduced ATP synthesis.
(2) The extent of the infectious process was limited, however, because the life span of the cultures was not significantly shortened, the yields of infectious virus per immunofluorescent cell were at all times low, and most infected cells contained only a few well-delineated small masses of antigen, suggestive of an abortive infection.
(3) Three overlapping clones, spanning a total of 19 kb of the human SC gene, including 3 kb of the 5' flanking region, were characterized.
(4) We have evaluated the life-span of B lymphocytes by measuring the functional reactivity of normal B cells upon transfer into xid mice, which do not respond to anti-mu, fluoresceinated-Ficoll (FL-Ficoll) and 2,4,6-trinitrophenyl aminoethylcarbamylmethyl Ficoll (TNP-Ficoll).
(5) Median effect analysis was applied for the evaluation of in vitro effect by the growth inhibition, and the in vivo effect by comparison of the increase of life span (ILS) in a combined group with the sum of ILS's in 2 single agent groups.
(6) These data indicate that the development of HCC in HBV-negative alcoholics with cirrhosis occurs in relation to the development of macronodules and loss of liver weight, most likely along with the prolongation of the life span.
(7) We then used synthetic peptides spanning the active fragment to identify the primary sequence of the adhesive site as Leu-Arg-Glu (LRE): neurons attach to an immobilized LRE-containing peptide, and soluble LRE blocks attachment of neurons to the s-laminin fragment.
(8) After cessation of exposures, HEVal was lost faster than predicted by the normal erythrocyte life span alone.
(9) The antibiotic was effective against Gram-positive bacteria, fungi and yeasts, and prolonged the life span of mice bearing Ehrlich ascites carcinoma.
(10) The mean red cell life span increased from 13 days before treatment to 21.6 days after 3 mo of carbamylation.
(11) Analysis of mRNA life span by using actinomycin D demonstrates that PPET-1 mRNA has a short intracellular half-life of about 15 min and is superinduced by cycloheximide.
(12) Respiration-related neurons were classified with respect to the correlation of their activity with the activity of the phrenic nerve: phase-bound inspiratory (I) and expiratory (E) neurones and phase-spanning expiratory-inspiratory and inspiratory-expiratory neurones were discriminated.
(13) The cytoplasmic and membrane spanning domains of galactosyltransferase were found to be sufficient to retain all of the hybrid invariant chain in trans Golgi cisternae as judged by indirect immunofluorescence, treatment with brefeldin A and immuno-electron microscopy.
(14) Selection limits for scutellar bristles in lines M and M2 were equal to or greater than the most extreme reported in the literature.-The probit span of the canalised 4 bristle class decreased in each selection line as the mean scutellar bristle number increased, and increased again in the relaxed lines as the mean bristle number decreased.
(15) The predicted yeast enzyme contains at least four potential membrane-spanning regions and several shorter hydrophobic regions that align exactly with similar sequences in the rat liver protein.
(16) cDNA was prepared by reverse transcription of peripheral blood mRNA and amplified by the polymerase chain reaction (PCR) using primers corresponding to sequences 400 bp apart on the cDNA, spanning the last three exons (X, Y, Z) of the beta-Sp gene.
(17) The biologically active unit spans about 16 kilobase pairs (kbp) and is composed of seven exons and six introns.
(18) The present study extended this effort to a noninstitutionalized life-span sample of males and females in six age groups (fourteen to ninety-four).
(19) This altered region spans the normal site of autocatalytic proteolysis that occurs at the same time as (enzymatic) activation of prochymosin at acidic pH.
(20) Moreover, no increase in cAMP can be detected over an extended time span.