Sixty-eight ancestral Mycobacterium tuberculosis isolates were previously identified by using the tuberculosis-specific deletion 1 (TbD1) PCR and mycobacterial interspersed-repetitive-unit-variable-number tandem repeat (MIRU-VNTR) typing (Y. J. Sun, R. Bellamy, A. S. G. Lee, S. T. Ng, S. Ravindran, S.-Y. Wong, C. Locht, P. Supply, and N. I. Paton, J. Clin. Microbiol. 42:1986-1993, 2004). These ...

the above investigation represents one of ihe few studies carried out in the field of population genetics in iran. the differences in all three groups of siudies which have been carried oui by blood transfusion centres of the imperial army, red lion and sun and teheran university, inspired us to carry out further investigations on abo blood grouping and rh typing in order to obtain the result o...

Three molecular typing methods were used to study the relationships among 184 Campylobacter strains isolated from humans, cattle, and chickens. All strains were genotyped by amplified fragment length polymorphism (AFLP) analysis, multilocus sequence typing (MLST), and sequence analysis of a genomic region with short tandem repeats designated clustered regularly interspaced short palindromic rep...

Introduction DNA typing has become widely accepted for the characterization of forensic biological evidence. The current genetic markers used, i.e., predominately short tandem repeat (STR) loci and to a lesser extent mitochondrial DNA (mtDNA), offer high levels of discrimination. In addition, the polymerase chain reaction (PCR) (1), the cornerstone of forensic DNA typing, provides a sensitivity...

The potential use of spoligotyping—a polymerase chain reaction based typing system for diVerentiation of strains of Mycobacterium tuberculosis—for studying the epidemiology of tuberculosis in developing countries which do not routinely perform mycobacterial culture is described in this issue of Thorax by Heyderman et al in a study from Zimbabwe. 1 How does this newer method compare with the now...

Multilocus sequence typing of 31 stx-carrying Escherichia coli O26:H11 strains isolated in Canada between 1999 and 2003 revealed a high degree of genetic relatedness at 10 loci, suggesting either that this is a clonal serotype (similar to O157:H7) or that additional genetic loci need to be examined.