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11.
HSV glycoprotein K (gK) is an essential herpes protein that contributes to enhancement of eye disease. We previously reported that gK binds to signal peptide peptidase (SPP) and that depletion of SPP reduces HSV-1 infectivity in vivo. To determine the therapeutic potential of blocking gK binding to SPP on virus infectivity and pathogenicity, we mapped the gK binding site for SPP to a 15mer peptide within the amino-terminus of gK. This 15mer peptide reduced infectivity of three different virus strains in vitro as determined by plaque assay, FACS, and RT-PCR. Similarly, the 15mer peptide reduced ocular virus replication in both BALB/c and C57BL/6 mice and also reduced levels of latency and exhaustion markers in infected mice when compared with control treated mice. Addition of the gK-15mer peptide also increased the survival of infected mice when compared with control mice. These results suggest that blocking gK binding to SPP using gK peptide may have therapeutic potential in treating HSV-1-associated infection. 相似文献
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The region of the herpes simplex virus type 1 LAT gene that is colinear with the ICP34.5 gene is not involved in spontaneous reactivation. 总被引:1,自引:3,他引:1 下载免费PDF全文
G C Perng K Chokephaibulkit R L Thompson N M Sawtell S M Slanina H Ghiasi A B Nesburn S L Wechsler 《Journal of virology》1996,70(1):282-291
The goal of this report was to determine if the region of the LAT gene that is colinear with ICP34.5 (kb 6.2 to 7.1 of LAT) is involved in spontaneous reactivation of herpes simplex virus type 1. We inserted one copy of the ICP34.5 gene into the unique long region of a herpes simplex virus type 1 (strain McKrae) mutant lacking both copies of ICP34.5 (one in each viral long repeat) and the corresponding 917-nucleotide colinear portion of LAT (kb 6.2 to 7.1). Rabbits were ocularly infected with this mutant, and spontaneous reactivation relative to that for the wild-type virus and the original mutant was measured. As we previously reported, the original ICP34.5-deleted virus (d34.5) was significantly impaired for spontaneous reactivation and virulence (G. C. Perng, R. L. Thompson, N. M. Sawtell, W. E. Taylor, S. M. Slanina, H. Ghiasi, R. Kaiwar, A. B. Nesburn, and S. L. Wechsler, J. Virol. 69:3033-3041, 1995). In contrast, we report here that restoration of one copy of ICP34.5 at a distant location completely restored the wild-type level of in vivo spontaneous reactivation, despite retention of the deletion in LAT (spontaneous reactivation rate = 0.3 to 1.4% for the ICP34.5 deletion mutant, 7.7 to 19.6% for the wild type, and 9 to 16.1% for virus with one copy of ICP34.5). Thus, the 917-nucleotide region of LAT from kb 6.2 to 7.1 was not involved in the LAT function required for wild-type spontaneous reactivation. We also found that restoration of a single ICP34.5 gene in a novel location did not restore wild-type virulence (rabbit death rate = 0% [0 of 15] for the original ICP34.5 deletion mutant, 8% [2 of 24] for the single-copy IPC34.5 virus, and 52% [14 of 27] for wild-type virus; P < 0.001 for one versus two copies of ICP34.5). It is likely that either two gene doses of ICP34.5 or its location in the long repeat is essential for full functionality of ICP34.5's virulence function. Furthermore, the ability of the single-copy ICP34.5 virus to reactivate at wild-type levels despite being significantly less virulent than wild-type virus separates the spontaneous reactivation phenotype from the virulence phenotype. 相似文献
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Three herpes simplex virus type 1 latency-associated transcript mutants with distinct and asymmetric effects on virulence in mice compared with rabbits 下载免费PDF全文
Perng GC Esmaili D Slanina SM Yukht A Ghiasi H Osorio N Mott KR Maguen B Jin L Nesburn AB Wechsler SL 《Journal of virology》2001,75(19):9018-9028
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Expression of herpes simplex virus type 1 glycoprotein I in baculovirus: preliminary biochemical characterization and protection studies. 下载免费PDF全文
We have constructed a recombinant baculovirus expressing the herpes simplex virus type 1 (HSV-1) glycoprotein I (gI). Sf9 cells infected with this recombinant virus synthesized gI-related polypeptides with apparent molecular sizes of 52 and 56 kDa. The recombinant gI appeared to be glycosylated, since it was susceptible to both tunicamycin and endoglycosidase H, and the expressed gI was transported to the surface of infected cells as judged by indirect immunofluorescence. Antibodies to the recombinant gI raised in mice neutralized HSV-1 infectivity. Finally, we show here for the first time that vaccination with gI can protect mice against HSV-1 challenge. 相似文献
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Activity of herpes simplex virus type 1 latency-associated transcript (LAT) promoter in neuron-derived cells: evidence for neuron specificity and for a large LAT transcript 总被引:26,自引:23,他引:3 下载免费PDF全文
J C Zwaagstra H Ghiasi S M Slanina A B Nesburn S C Wheatley K Lillycrop J Wood D S Latchman K Patel S L Wechsler 《Journal of virology》1990,64(10):5019-5028
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Complete sequence of bluetongue virus L2 RNA that codes for the antigen recognized by neutralizing antibodies. 总被引:7,自引:2,他引:5 下载免费PDF全文
The complete sequence of the RNA which encodes the major outer-shell-neutralizing antigen (VP2) of bluetongue virus serotype 10 was determined from overlapping cDNA clones inserted into pBR322. The segment L2 RNA was 2,926 base pairs long (1.87 X 10(6) daltons) and had, in one strand, an open reading frame capable of coding for a protein that had a calculated size of 111,122 daltons (956 amino acids) and a +11.5 net charge. The coding strands of both the L2 gene and the group-specific L3 gene of bluetongue virus serotype 17 (M. Purdy, J. Petre, and P. Roy, J. Virol. 51:754-759, 1984) had common sequences of some six nucleotides at their 5' termini (namely, GUUAAA...) and eight nucleotides (namely, ...ACACUUAC) at their 3' termini. Both had short 5' noncoding regions with AUG codons at residues 20 to 22 (L2) and 18 to 20 (L3). The sequences flanking these AUG codons were similar (A/GCCAUGG). The 3' noncoding regions were longer (36 nucleotides for L2, 49 nucleotides for L3). The predicted amino acid sequence of the L2, compared with the similarly sized L3 gene product, was rich in cysteine residues and charged amino acids. 相似文献
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Manije Beigi Fatemeh Afarande Hosein Ghiasi 《Reports of Practical Oncology and Radiotherapy》2016,21(1):42-49