Random sampling theory, the CS sampling, and construction proposed by Donoho et al. in 2006 [7–9] and Baraniuk in 2007 [10] may also help in this endeavor.
Some impediments remain, in particular with respect to corrections for initial isotopic disequilibrium (younger samples) and the construction of internal chronologies (older samples) but these are areas of intense research activity and are likely to see significant advances in the near future.
Originating tissue types were assigned for each GEO sample using the metadata in the database, allowing validation of the matched samples and the construction of precision-recall curves for each tissue.
The source of bovine RNA, RNA sample preparation, and construction of small RNA sequencing libraries is described in supplemental methods (File S1).
MC participated in sample collection and construction of cDNA libraries.
FT participated in sample collection and construction of cDNA libraries.
JA participated in sample collection and construction of cDNA libraries.
JB participated in sample collection and construction of cDNA libraries.
GS participated in sample collection and construction of cDNA libraries.
EA participated in sample collection and construction of cDNA libraries.
FA participated in sample collection and construction of cDNA libraries.
