(n.) A resinous substance produced mainly on the banyan tree, but to some extent on other trees, by the Coccus lacca, a scale-shaped insect, the female of which fixes herself on the bark, and exudes from the margin of her body this resinous substance.
Example Sentences:
(1) Fifty-six percent of Lac+ transconjugants were resistant to the S. cremoris M12R lytic phage.
(2) We have previously shown that about 90% of total Escherichia coli lac repressor synthesized in mammalian cells is located in the cytoplasm [Hu and Davidson, Cell 48 (1987) 555-566].
(3) Hfr strains B4 and B8 transfer the Escherichia coli chromosome in opposite directions, each transferring lac(+) as the last known marker.
(4) Combined with histological analysis, these results suggest a more rapid recovery of normal spermatogenesis after physical insult with LAC treatment.
(5) The F'lac+ episome of Escherichia coli origin was transferred by conjugation with frequencies of 10(-7) to 10(-5) from Erwinia amylovora to 14 out of 15 Salmonella typhimurium trp female parents.
(6) A protein identical in properties to FIII L. casei lac was isolated from clones of E. coli carrying this DNA insert.
(7) Only one monoclonal antibody strongly inhibited cAMP binding by CRP, and this was accompanied by a consequent strong inhibition of both lac DNA binding and abortive initiation by RNA polymerase.
(8) These ends were cloned separately in lambdapMu hybrid particles that derived from a single Mu lysogen in the lac Z part of lambdaplac5.
(9) The structure of F13, a plasmid containing lac, purE, and proC, has been determined by heteroduplex analysis.
(10) In this case, resistance markers were lost when the transductants became Lac- but the derivatives remained copper resistant.
(11) Circular dichroic studies and hydropathy profiling of the amino-acid sequence of this 'lac' permease suggest a secondary structure in which the polypeptide consists of 12 hydrophobic segments in alpha-helical conformation that traverse the membrane in zig-zag fashion connected by shorter, hydrophilic domains with most of the charged residues and many of the residues commonly found in beta-turns.
(12) The strength of the STII gene promoter was compared with that of the ompF and lac operons, which were similarly fused to the lacZ gene.
(13) From the results of potassium iodide quenching of fluorescence from the tryptophans, and from attempts to react the native lac repressor with dimethyl(2-hydroxy-5-nitrobenzyl) sulfonium bromide and 2-hydroxy-5-nitrobenzyl bromide, we propose that tryptophan residue 209 is involved in a conformational change of the protein upon binding of inducer, but does not come in direct contact with inducer.
(14) In cells growing with interdivision times of 27, 36, and 55 min, the F'lac replicated at various stages in the division cycle but always at approximately the same time as initiation of chromosome replication.
(15) Expression of the blood group carbohydrates was similar in follicular and radicular cysts but differed from that seen in odontogenic keratocysts by the failure to detect N-lac in the latter.
(16) The phage lambda operator OR1 and a 18 base pair symmetric lac operator have been studied by high resolution NMR.
(17) Deletions covering all or part of the transfer region, as well as of lac and of pif, were obtained in the course of this analysis.
(18) A Mud(Ap, lac) prophage has been shown to be inserted into the ptsH gene of E. coli.
(19) From transient expression studies of the fusion gene between the chloramphenicol acetyltransferase and lac genes, it was found that the lacCAP binding site could act as an enhancer activity on the SV40 promoter, and also as an additive enhancer activity to the SV40 enhancer in HeLa cells.
(20) Expression of chlD-lac was increased in cells grown with nitrate.
Lah
Definition:
Example Sentences:
(1) Seven patients (12.5%) developed LAH between the first and third hospital day, while 49 patients did not.
(2) Fibrin deposition, assessed both by immunohistology and quantitation of radioactive fibrin extracted from skin test sites, was increased by 30% when OVA was tested in the presence of LAH.
(3) Interferon-gamma (IFN-gamma) production is severely defective in L-LAK-HCC but not defective in H-LAH-HCC.
(4) According to the results of electrocardiogram patients were subdivided into 4 groups: normal electrocardiogram, isolated left auricular hypertrophy (LAH), isolated left ventricular hypertrophy (LVH) and major ST-T wave changes.
(5) Of these, five had electrocardiographic bifascicular block (RBBB with LAH) with or without additional 1 degrees A-V block.
(6) Attention has been called to the fact that, with the onset of LAH conduction, the T-wave axis shifts oppositely to that of the QRS, thus widening the QRS-T angle in the frontal plane by about 95 degrees.
(7) LAH has been shown to conceal LVH on precordial leads, while it tends to make LVH more manifest on limb leads.
(8) One connection between sport and fashion writing is that they come with very lazy gender assumptions: sportsing for the boys and lah-di-dah clothes for the gals.
(9) The incidence of left anterior hemiblock (LAH), right bundle branch block (RBBB), left bundle branch block (LBBB) and RBBB+LAH was 12.2, 4.2, 3.8 and 2.5%, respectively.
(10) Recurrent pump failure with occasional outcome is more common in cases with RBBB and LAH than in other types of blocks.
(11) T-waves are lowered but not inverted in lead I as a result of LAH conduction and precordial leads are variably but not significantly altered.
(12) Ninety-four percent had developed right bundle branch block (RBBB) and 16 percent had additional left anterior hemiblock (LAH).
(13) 131 subjects were studied: 34 of them were normal (control group); 30 were carriers of isolated LAH; 38 were carriers of isolated LVH; 29 showed a pattern of combined LVH and LAH.
(14) The time course of laccase production by the lah-1 mutant revealed that expression of 66-kilodalton laccase was repressed in conidia and derepressed during vegetative mycelial growth.
(15) Among these 53 LAH patients, only 20 desired a pregnancy.
(16) The critical factor in a bad late prognosis in patients with ECG evidence of RBBB and LAH may be with ECG evidence of RBBB and LAH may be the history of transient postoperative CHB.
(17) In the LAH + RBBB group, there was a higher mortality rate and frequent evolution toward complete A-V block.
(18) Slow depolarization elicited by repetitive activation of splanchnic and coeliac nerve trunks, at voltages supramaximal for the fast cholinergic responses, were recorded from about half of both phasic and tonic neurones, but only one of twenty-four LAH neurones.
(19) The relations between LAH and clinical, echographic and hemodynamic findings are specified.
(20) Relative amounts of laccase in the culture filtrate of the lah-1 mutant were much higher than those induced with cycloheximide in the wild-type strain, demonstrating high efficiency of the lah-1 mutant in production and secretion of laccase.