Grand Erg Occidental Grand Erg Occidental The Grand Erg Occidental (, al-ʿIrq al-Gharbī al-Kabīr), (also known as the Western Sand Sea) is the second largest erg in northern Algeria after the Grand Erg Oriental. It covers an area of approximately . The sand dunes in the erg are formed by the wind, and can be up to high. Certain crescent-shaped dunes, known as barchans, are actually mobile; the wind can push these dunes as much as 20 to 30 m (65-100 ft) in one year. It is a desert natural region that receives less than 50 mm (1,96 in) of rainfall per year.
ERG (gene) applications in using blood stem cells for tissue repair, transplantation and other therapeutic applications. This gene can be classified as a proto-oncogene. During chromosomal translocations that occur in cell division, "ERG" can accidentally get stuck onto a different chromosome than where it belongs. This is analogous to another translocation, the Philadelphia chromosome. This results in fusion gene products, which can have bad consequences for cells. Examples of these fusion gene products would be TMPRSS2-ERG and NDRG1-ERG in prostate cancer, EWS-ERG in Ewing’s sarcoma, and FUS-ERG in acute myeloid leukemia. DNA binding protein ERG fuses with RNA binding proteins EWS and