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Showing 1 to 20 of 27 for “"latent period"”.
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A Restriction Analysis of Klebsiella Pneumoniae Phage SBS
… the burst size to be 10, and the phage had a latent period of 20-25 minutes. The DNA was found to be double stranded and linear. Its molecular weight was 41.66 + 0.72 kilobase pairs. The DNA was digested with a battery of endoncleases and partial restriction maps determined. The potential of …
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An Application of Differential Mathematical Modeling Techniques to Study the Ongoing Rabies Epizootic in China
… to complex transmission chains. There is a long latent period of rabies, between 1 to 3 months after infection, which further complicates control efforts. Mathematical modeling is a valuable tool in the study of infectious disease outbreaks and there have been many models applied to rabies …
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The effect of thyroid hormones an growth and metabolism of two species of teleost fish
… and brain of tilapia fed these hormones. After a latent period of 12 -48 hours a single injection of both T4 and T3 induced increases in protein and RNA in liver and muscle of tilapia and carp. Actinomycin D inhibited this response to a certain extent. Thyroid hormones seem to be more important in …
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Force Values and Rate of Distal Movement of the Mandibular First Permanent Molar
… of movement, diminish the amount of root and periodontal damage, and practically eliminate pain usually associated with tooth movement. The sample was composed of children who had prematively lost deciduous mandibular second molars with resultant mesial tipping of the first permanent molar. …
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Replication of bovine parvovirus
… to 85% of the cells were synthesizing DNA. The latent period for progeny BPV production was 8 hr in HU-synchronized cells infected at the beginning of S phase compared to a 16 hr latent period in asynchronous cells. In addition virus titers and the percentage of cells containing viral specific …
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Postradiation sarcomas
… of the initial malignancy as well as the latent period for the development of postradiation sarcoma, the type of postradiation tumor and the outcome of the disease; [2] to establish as accurately as possible dose levels at which the postradiation tumors have developed; and [3] to briefly …
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Biosystematic Studies in Crepidotus and the Crepidotaceae (Basidiomycetes, Agaricales)
… biology, including presence of a prolonged latent period prior to basidiospore germination; spontaneous reversion of differentiated hymenial cells to vegetative growth; and the revelation that structures previously termed pleurocystidia are actually the expression of secondary growth from …
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The effect of leg lengthening surgery on muscle function : implications for rehabilitation
… significant loss of joint range of motion in the latent period prior to distraction of the bones starting. Factors that influenced loss of joint range in the subjects included in this study included the rate of lengthening, the age and the diagnosis of the patient. A mathematical model was …
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The determination of log-time mortality curves of the various life stages of (Hypera postica) subjected to certain insecticides
… should have exhibited the characteristic latent period of from two to six hours before symptoms of its activity appeared. The residual activity should be great. Indian, a more stable organophosphate than Dibrom, would be expected to be somewhat intermediate between the other two in speed …
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Serum lipid concentrations during DMBA-induced mammary carcinogenesis of rats fed diets of different types of protein with 20% dietary restriction
… group. The C-AL group exhibited shorter latent period and higher incidence for rats bearing first palpable tumor > 1 em. The SPI-R rats developed the least number of multiple tumors. All the tumors with the size of 1-2 em in diameter except one were mammary adenocarcinomas. No consistent …
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Biochemical and Biological Studies on the Growth of an RNA Containing Bacteriophage
… of the presence of histidine halfway through the latent period, but remains dependent on the continued presence of methionine. These results suggest that a protein, other than the coat, is synthesized early after phage f2 infection, which is essential for the synthesis of virus RNA. An enzyme …
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The role of p53 in virus-induced and multi-step lymphomagenesis
… develop tumours after a significantly reduced latent period. The data suggested that whilst p53 loss is obligatory for in vitro culture of tumour cells, it is not required for the growth of tumours passaged in vivo. The sparing effect was not absolute, however, and there was some evidence of …
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MODELING THE DYNAMICS OF INFECTIOUS DISEASES WITH Latency IN SPATIALLY HETEROGENEOUS Environments
Assuming that an infectious disease has a fixed latent period and latent individuals in the population may disperse in a spatially heterogeneous environment, we derive three new models of SIR type, which are more realistic than the existing related ones. The first one considers a 2-patch …
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A CHARACTERIZATION OF THE BACTERIOPHAGE 41C AND ITS LYTIC CYCLE IN BACILLUS SUBTILIS 168
… size of 10('3) phage per host cell, following a latent period of 50 minutes. In addition, phage 41c (a double-stranded DNA phage) was found to be remarkably similar to another B. subtilis phage, SSP1. They were almost identical in size, morphology, sensitivity of infection to deoxyribonuclease or …
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Extending Space-Time Putative Hazard Models to Detect Latent Risk Features
… of facilities could lead to evidence for latent periods of risk. This work examines the development of Bayesian models for the latent switching operating period of putative hazard sources, such as nuclear processing plants, waste disposal incinerators and cement factories. The developed …
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Taxonomy and pathogenicity of rusts from Allium species in the U.K
… cycle of several components of resistance (viz; latent period, pustule density and pustule length) showed that some cultivars performed consistently better against all isolates. However, in most cases there was a considerable and complex cultivar-isolate-component interaction. There was no …
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An investigation of the distribution of gastrin-like activity, and its nature, in the gastrointestinal tract of the sheep
… dried antral extract over a twenty four week period showed that the activity was maintained for the initial six weeks, and that 80% of the activity was then lost over the following eighteen weeks. Studies using columns of Sephadex have shown that extracts from all regions of the ovine …
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Expression and genetics of resistance to Septoria tritici in wheat
… The cultivar Lacos exhibited the longest latent period, lowest infection frequency, lowest spore production and lowest rate of lesion expansion. To study association of resistance with heading time and height, progeny of crosses between resistant and susceptible parents were studied in the …
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The nature of skin-sensitizing antibody in the chicken (<i>Gallus domesticus</i>) upon primary immunization with bovine serum albumin (BSA)
… that the ssa persisted in the skin for longer periods of time than could be detected in the serum of the same animal. ACA reactions further revealed that birds, whose serums did not elicit PCA responses, could display positive direct skin tests. It was also found that ACA responses could be …
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Improvement of asexual propagation and Anisogramma anomala detection protocols to facilitate applied breeding of new Corylus avellana and C. americana x C. avellana germplasm
… A. anomala has a 12- to 16-month symptomless latent period that delays the culling of susceptible plants. Refinement of recently developed real-time polymerase chain reaction (PCR) protocols that provide early detection of EFB susceptible seedlings would greatly improve the capacity and pace …
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