Wnt3a had over 1000-fold highexpressionion compared with OP9-WT, whereas Wnt5a had ~500-fold and Dl1 remained to be expressed at levels over 700-fold.
Of the 15 class I genes with open reading frames, three are putative class Ia genes (Maeu-UA (chr7), Maeu-UB (chr6) and Maeu-UC (chr1)), four are putative class Ib genes (Maeu-UM, Maeu-UK, Maeu-UE and Maeu-UO), four show no evidence of expression and the remaining genes appear to be expressed only at low levels and are not classified as class Ia or class Ib (Maeu-UD, Maeu-UF, Maeu-UH and Maeu-UN).
For the remaining genes, six are reported to be expressed in other organisms' inner ear or cochlea, mainly mouse or chicken, while four have no gene expression data for these tissues.
The remaining 27 transporters previously found to be expressed in the liver were found to be expressed in the human kidney.
Likewise, the remaining 536 ESTs were found to be expressed as greater than 2-fold higher in the male gonad tissue in reference to the female gonad tissue (Additional file 2).
One group was formed of remaining genes that are known to be expressed in the synapse but do not share any cellular function with other genes (this gene group was called "unknown").
The remaining 94 TDFs were considered to be expressed more specifically in the incompatible interaction (see Additional File 1), 43 of 94 TDFs were further analyzed by qRT-PCR.
It will remain to be determined whether Bai1 is expressed and required by epithelial cells to promote activation of the Dock1/Elmo1/Rac1 module to induce clearance of dead epithelial cells during mammary gland involution.
For the CYP transcripts detected in the purified CD34+ CBHSPC preparations, it remained to be confirmed whether they were expressed in the CD34+ cells or in the small fraction (<6% of total) of contaminating CD34− MNCs.
Naturally-occurring Tregs are positively selected in the thymus, presumably by self-antigens that remain to be defined, and express the FoxP3 transcription factor, which is essential for their regulatory function [1], [2] but not for their lineage determination [3].
These analyses were performed at the tissue, not cellular, level and other less abundant isoforms may remain to be identified, particularly those expressed earlier in development than E17.5.
