To balance contributions of abundant and rarer taxa, data were moderately (square root) transformed given the modest presence of rare species, followed by calculation of the Bray-Curtis coefficient to summarize the overall similarity between any samples (by taking all taxa and their relative abundance into consideration) for use in multivariate non-metric MDS ordination analysis.
The codewords are of different length, and in accordance to the golden rule of data compression, rarer symbols are represented by longer codewords.
Finally, by comparing RPKM values of differentially expressed transcripts in our study with the spike-in control experiment, we determined that the cellular abundance of the rarer transcripts in our data approaches ~5 copies per cell.
However, Dr Pharoah and his colleagues recently published the results of a large study which showed that SOD2 is not associated with breast cancer after all.With luck, this sort of thing will become rarer as scientists gather more data.
Data on other, rarer histological types are sparse and often based on a small series of cases leading to imprecise risk estimates.
Apparent organellar chimerics in the HMPR data were even rarer, probably because organellar DNA insertions into the nuclear genome are likely to be extensively cytosine methylated, and nearly all the candidates were found to be likely cases of organellar insertions in the nuclear genome.
These studies have been conducted in specific areas of the country, at different times, using different testing methods, and as they have sampled all women attending for screening they have inevitably provided fewer data regarding the rarer disease-grades, and some age-groups.
Conclusions: The data suggest that the rarer PR allele may be associated with an increased likelihood of repeated miscarriages contributing to its multi-factorial causes.
Based on results obtained with the Generalised Extreme Value (GEV) distribution, it was concluded that large floods of the last century are presumably rarer than previously considered using shorter data series.
For the analyses of population genetics, the rarer alleles, relative to the entire data set, were considered in these exceptional cases.
