The latter ensures a sample check for inhibitory substances and preparation failures which otherwise could result in false-negative diagnostic findings [21].
Data were entered into an IBM SPSS Statistics V.20 database and a 10% random sample checked for accuracy.
Standard genotyping quality control including 10% duplicate samples, checking for Hardy-Weinberg equilibrium as well as negative samples revealed no major errors.
More tests of his urine, blood and behavior will follow, with samples checked for the minutest traces of pesticides, heavy metals, byproducts of burned diesel fuel and tobacco, and other substances.
It is your vacation, but you are part of a research team that checks crocodile traps to measure and weigh the reptiles, as well as take blood samples, check for parasites, pump out their stomach contents, and tag them for identification.
DNA removed using DNase I kit (Ambion) and the RNA samples checked for concentration and purity (260 280 nm absorbency).
Of 19 samples checked for co-receptor usage, 14 (73.7%) were chemokine co-receptor 5 (CCR5) variants while three (15.8%) were CXCR4 variants.
The final sample, after checking for completeness of data, was 639.
Standard genotyping quality control included 10% duplicate samples, negative and positive samples and checking for Hardy-Weinberg equilibrium (HWE).
For reasons of performance, intervals are initially sampled without checking for overlap.
