A possible source for missing neurogenesis might be seasonal variations, as observed, for example, in the song control nuclei of songbirds [23].
Also, the lack of an exhaustive annotation for the TF set is another source for missing interactions between potential regulators of the transcriptional modules.
In addition, most genetic association studies compute statistics at the single marker level and ignore the possible underlying biological interactions that contribute to the development of disease [ 19] and could be a possible source for "missing heritability".
The groups of chemokines and chemokine receptors in our classification may provide a valuable source to search for missing binding partners (Tables 1 and 2, and Table S2 in Supporting Information).
There are several possible sources for the missing genes, and this is a subject of intense argument and ongoing research.
Several sources for the missing heritability have been proposed, including the contribution of many common variants with small individual effect sizes, which cannot be reliably found using the standard GWAS approach.
Data sources PubMed, contact with authors for missing information, and author survey for unpublished SF-36 data.
Canonical sources of missing data are questionnaires.
The gamma ray direction finder would be a useful and innovative tool for the location of contamination, searching for missing radioactive sources, identification of highly radioactive areas, investigating of dose rate differences often found by car-borne measurement, and so on.
Among the 6258 observations with information from both sources, the proportion of agreement was 98.6% (Kappa=0.80, P<0.001) indicating that the NBSS was a robust source for the missing data.
