(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.
Lam
Definition:
(v. t.) To beat soundly; to thrash.
Example Sentences:
(1) Several other factors known to activate neutrophils also caused down-regulation of LAM-1 and up-regulation of CD11b, including TNF, FMLP, and leukotriene B4.
(2) The serum levels of aminoterminal type III procollagen peptide (S-PIIINP), immunoreactive prolyl 4-hydroxylase protein (S-IRPH), 7S domain of collagen type IV (S-Col IV, 7S), and fragment P1 of laminin (S-Lam), which are associated with the metabolism of extracellular interstitial collagens and basement membranes, were measured sequentially for two years in 14 rheumatoid arthritis (RA) patients undergoing disease modifying antirheumatic drug treatment.
(3) C-I was superior to LAM in supporting the attachment of the cells, especially of HuH-6, to plastic surfaces.
(4) Although further evaluations are required, this study suggests that the monoclonal antibodies to LAM-B may be useful in detecting mycobacteria from clinical specimens.
(5) Astragalus lusitanicus Lam lusitanicus has been reported to be toxic for mammals.
(6) As LAM was composed of Kidney-tonifying herbs, all the subjects chosen fell into the pattern of Kidney-deficiency in TCM.
(7) MAbs specific to other adherence molecules such as ICAM-1, CD2, CD58, CD4, CD8, CD11b and LAM-1 did not affect leukocyte adherence in this model.
(8) et Zucc., Z. armatum DC., Z. simulans Hance, Z. avicennae (Lam.)
(9) The authors report a case of lymphangiomatosis (LAM) proven histologically in a 49 year old female.
(10) That report said Lam, Lui and Cheung might be allowed to return to Hong Kong this week, citing unspecified sources.
(11) Some lambdoid phages and lambda mutants that overcome the interference by the lam mutations have been obtained, and were used as tools for characterizing the host mutations.
(12) Only a slight increase of LAM immunoreactivity was observed in rough endoplasmic reticulum after a long weaning period.
(13) Interestingly, granulocyte-CSF and IFN-gamma had minimal effects on neutrophil LAM-1 expression.
(14) Epstein-Barr-virus- (EBV-) positive lymphoblastoid cell lines (LCLs) spontaneously arising in vitro were obtained from the peripheral blood of six HIV-seropositive patients and from the peripheral blood and the bone marrow of one patient (LAM) with AIDS and lymphoma.
(15) The physiologic states of Mycobacterium leprae isolated from patient biopsies were studied using single cell mass spectrometry by laser microprobe mass analysis (LAM-MA) and ATP bioluminescence assay.
(16) Pyknotic profiles are present in the ganglion cell layer during the first 2 postnatal weeks, reaching peak numbers during the first 4 postnatal days (corresponding to the time of greatest loss of ganglion cells and their axons: Potts et al., '82; Lam et al., '82; Perry et al., '83).
(17) Gui Minhai: the strange disappearance of a publisher who riled China's elite Read more Five Hong Kong booksellers – Gui Minhai, Lee Bo, Lui Bo, Cheung Ji-ping and Lam Wing-kei – who specialised in books criticising China’s Communist party elite have vanished since October.
(18) The expression and regulation of LAM-1 on granulocytes, monocytes, and their precursors was investigated using flow cytometry and the anti-LAM-1.1 mAb.
(19) We have found that laminin and a pepsin fragment of laminin (P-lam) contain distinct sites for HT-1080 human fibrosarcoma cell attachment and for neurite outgrowth activity of PC12 and NG108-15 cell lines.
(20) A sequence was identified that is sufficient for amdR regulation and that shows identity with sequences involved in amdR regulation of the gatA and lam genes.