The percentages of piRNAs with 1U in total transposon piRNAs are indicated The ratios between sense and antisense transposon piRNAs are indicated The standard deviations (n = 3) are shown in parentheses Next, we catalogued expression levels of sense and antisense transposon piRNAs.
This process resulted in a comprehensive annotation of the tammar mammary gene catalogue with expression estimates from MPSS data.
However, a comparative analysis of the above mentioned studies revealed rather weak overlap of catalogued gene expression profiles [7], which is mostly a consequence of microarray experiments generating large sets of data that are not directly interpretable.
According to BioGPS, which catalogues mRNA expression in various tissues, 19 proteins have strong gene expression in the prostate, as defined by an expression of 3 times the average tissue expression.
Of particular interest, given that malaria parasites are only transmitted through female mosquitoes, we separately catalogued gene expression for each tissue in males and females, thus providing both tissue and sex-specific views of gene expression in the adult.
The Gene Expression Nervous System Atlas (GENSAT) is another remarkable project that aims to catalogue gene-expression patterns of the developing and adult central nervous system in the mouse (http://www.gensat.org/index.html).html
In Drosophila melanogaster, cataloguing tissue expression patterns has been useful, especially for inferring biological functions, since the majority of genes encoded in the genome are not ubiquitously expressed [ 19].
This work also establishes an extensive catalogue of gene expression patterns for future investigations aimed at the dissection of the transcriptional regulatory hierarchies that govern tissue-specific expression patterns associated with tissue differentiation within berries.
Thus, a complete catalogue describing the expression of all members of the prominin-family among species of interests is needed.
There have been a handful of studies that have attempted to catalogue how mRNA expression changes with age, the largest of which have been performed in kidney [5] and muscle samples [6].
