Such samples often contain a limited quantity of nucleic acids of varying quality, complicating library construction.
While using their data, one needs to be aware that journal subscriptions are very complicated in library practices.
It is known that Escherichia coli cells can be simultaneously transformed with multiple unique plasmids and thusly complicate recombinant library screening experiments.
As current determination of appropriate selection of energy absorbers is tedious and complicated, a data library and design template is developed, which hinges on the maximal energy density to stress ratio.
Instead, many models involve complicated geometric structures, libraries of measured parameters, and nontrivial procedures.
Appropriate study design and application of microbial source tracking tools can be complicated, particularly for library-based methods [ 29, 30].
The results of real time PCR performed at each time point revealed that not every gene was up-regulated during the entire late stage, which suggested that, although the expression profiles of genes identified in the SSH library were complicated, all the genes identified in the SSH library was induced at least one of the four time points.
Comparing expression among libraries of these two species is complicated by variation in library preparation methods, notably the requirement to include an amplification step to clone cDNAs from the low levels of Pt teliospores, and the need to normalize libraries being compared to correct for EST pool size.
Although MPSS generates large volume of data, its complicated library-construction procedure and high sequencing cost limit its use in individual laboratories.
Since the EST-based prediction of expression patterns might already be error-prone because of the lack of sufficient numbers of EST sequences for each tissue this might be further complicated by different cDNA library protocols.
