The epidemiological information on the MTZ cases was limited, because the molecular typing was retrospective and subsequent to the contact tracing and the patients were not re-interviewed.
Isotope labelling of choline with nine deuterium atoms, which increases the number of mass units by +9 in the PC head group in subsequent metabolic products, helps to trace specific PC molecular species in pulmonary surfactant.
So thoroughly did his thought come to influence the Byzantine theological tradition that it is impossible to trace the subsequent history of Orthodox Christianity without knowledge of his work.
Although 25% of women sampled required tracing subsequent to a web-search completed in 2003, half were located by supplementing this search with: 1) the listed name for telephone numbers at last contact identified by a prior web-search (2001 feasibility pilot web-search), and using old telephone CD-ROMs, and 2) by broadening web-searches to capture relatives.
An integrative in silico approach probing these systematic changes in a comparative genomic framework was employed to trace the duplication and subsequent radiation of USP4, USP15 and USP11.
Subsequent contact tracing pointed to an index case-patient, whose infection led to 38 cases of SARS (in healthcare workers, patients, and visitors) in these wards and to another 12 cases of SARS in the rest of the hospital campus before the outbreak was brought under control 3 weeks later.
The men's sudden disappearance and subsequent difficulty in tracing them fits a pattern of hostage taking in Baghdad and southern Iraq over the past nine years.
Subsequent deconvolution by tracing the "haplotypes" at these loci in different Singaporean isolates revealed probable sequence signatures of T, T, C at these locations in one isolate and C, C, T in the other (see Table S2).
By looking into the plane of division and the order at which this division occurs from the 2- to the 4-cell stage and subsequent lineage tracing, a subgroup of embryos was identified where it is possible, with a relatively high probability, to predict the future position of the blastomeres in the blastocyst (Piotrowska-Nitsche et al., 2005).
The genomic investigation linked the first of these to a contaminated bed, prompting the development of a cleaning protocol specific to this type of bed, with subsequent cases traced again to the burns theatre.
Moreover, the number detected through subsequent contact tracing drop off dramatically after the initial level of contact tracing, to 181 (18%) at second level of contact tracing (those identified as contacts of those 719 first level detections) and 69 (6.7%) at the third level.
