This may be failure of the system at the knowledgebase level, possibly due to incomplete coverage by the databases used.
This is due to incomplete or absent electronic databases before 1990 and to a more precise manual search not based on keyword search but on studies abstracts and full-text articles.
The proportion of non-plant transcripts is probably higher among singletons, because many of them may not have produced statistically significant hits due to incomplete microbial records in public databases.
One hospital excluded their patients (n = 4) from the linkage protocol and 62 patients could not be matched to the iBob database, due to incomplete demographic information.
However, it should be noted that this study excluded many growth-essential micronutrients from the analysis due to incomplete coverage in the INMUCAL database (i.e. content data for such micronutrients were available in less than 80% of all food items), including zinc, iodine, selenium, etc.
The lack of merlin-like sequences in these parasite genomes may be due to incomplete genome sequences in the database; however, this explanation is unlikely because the merlin-like sequence was also not observed in the genome of Schistosoma mansoni, which has been rigorously studied [ 50].
Syntenic analysis reveals that almost the whole considered region is absent from the bird genomic databases, likely due to incomplete genome sequencing.
Syntenic analysis also indicates that the considered region is largely missing from the bird and turtle genomic databases likely due to incomplete genome sequencing (see below).
In both cases, artifacts in previous estimates of the rate of gene flow between Archaea and Bacteria were likely due to incomplete and biased composition of available databases and application of simple BLAST-based procedures that were not sufficiently reliable given these biases.
NCBI BLAST searches of sequence from each exon yielded no feline sequences, likely due to incomplete information on the cat genome in this database.
