Erg Chebbi Erg Chebbi Erg Chebbi () is one of Morocco's several ergs – large seas of dunes formed by wind-blown sand. There are several other ergs such as Erg Chigaga near M'hamid. Technically all these ergs are within an area of semi-arid Pre-Saharan Steppes and not part of the Sahara desert which lies some distance to the south. In places, the dunes of Erg Chebbi rise up to 150 meters from the surrounding hamada (rocky desert) and altogether it spans an area of 28 kilometers from north to south and up to 5–7 kilometers from east to west lining the Algerian
ERG (gene) TLS/FUS in Ewing's sarcoma and acute myeloid leukemias respectively and function as transcriptional activators. ERG and its fusion proteins EWS-ERG and TLS/FUS-ERG inhibit apoptosis. "ERG" can fuse with TMPRSS2 protein to form an oncogenic fusion gene that is commonly found in human prostate cancer, especially in hormone-refractory prostate cancer. This suggests that "ERG" overexpression may contribute to development of androgen-independence in prostate cancer through disruption of androgen receptor signaling. The fusion gene is critical to the progression of cancer because it inhibits the androgen receptor expression and it binds and inhibits androgen receptors already present in the cell. Essentially TMPRSS2-ERG