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DNA probes that hybridize to a mycobacterial insertion sequence, IS900, present in multiple copies in the genome of Mycobacterium paratuberculosis were found to be highly specific for M. paratuberculosis. DNA sequences derived from IS900 were used to prepare DNA primers for detection and identification of M. paratuberculosis by the polymerase chain(More)
The complete sequence of an insertion element IS900 in Mycobacterium paratuberculosis is reported. This is the first characterised example of a mycobacterial insertion element. IS900 consists of 1451bp of which 66% is G + C. It lacks terminal inverted and direct repeats, characteristic of Escherichia coli insertion elements but shows a degree of target(More)
The relationship between the normalised difference vegetation index (NDVI) and leaf area index (LAI) was modelled for mangroves growing on the Caicos Bank, Turks and Caicos Islands. NDVI values were used to predict LAI with this model and a thematic map of LAI produced from satellite data for the whole Bank. Mangrove LAI ranged between 0.8 and 7.0, with a(More)
This paper describes the evaluation of a newly developed DNA probe for Mycobacterium paratuberculosis. DNA probe PCR278 is a 278 bp fragment obtained by polymerase chain reaction (PCR) amplification of the 5'-region of IS900, an insertion element contained in the genome of M paratuberculosis. This DNA probe can specifically distinguish M paratuberculosis(More)
The structure of the gene coding for iduronate sulphate sulphatase (IDS) has been determined. We have used exon to exon and vectorette PCR to identify 9 exons within the IDS gene and to characterise the surrounding intron sequences. The results of this study will be useful for the complete analysis of many mutations giving rise to Hunter syndrome. IDS is(More)
An insertion sequence element of Mycobacterium avium subsp. silvaticum was isolated and its complete nucleotide sequence determined. IS902 is 1470 bp in size and is repeated 10-12 times per genome. An open reading frame of 1200 bp was identified, encoding a protein product of Mr 43932. This protein is highly similar to the predicted proteins of IS900 of(More)
Strains of the Mycobacterium avium intracellulare complex (MAIC) have become important colonisers of patients with acquired immunodeficiency syndrome (AIDS). Restriction fragment length polymorphisms were used to study the DNA from 88 MAIC isolates, including 51 derived from 47 AIDS patients. MAIC isolates from 33 of 45 AIDS patients were identical at the(More)
We have used screening with the polymerase chain reaction and chemical mismatch detection of amplified cDNA to detect and characterize deletions and point mutations in six Hunter Syndrome patients. A high degree of mutational heterogeneity was observed. The first patient is completely deleted for the gene coding for alpha-L-iduronate sulfate sulfatase,(More)
The present studies were directed to determine whether peptide histidine isoleucine (PHI), like its structural analogues secretin and gastric inhibitory peptide, inhibits antral gastrin. In separate experiments, the effects of PHI on medium gastrin concentrations, the incorporation of [35S]methionine into newly synthesized gastrin, and steady-state gastrin(More)
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