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Susceptibility weighted imaging (SWI), originally called BOLD venographic imaging, is an MRI sequence that is exquisitely sensitive to venous blood, hemorrhage and iron storage. SWI uses a fully flow compensated, long echo, gradient recalled echo (GRE) pulse sequence to acquire images.
In molecular biology, SWI/SNF (SWItch/Sucrose Non-Fermentable), [1] [2] is a subfamily of ATP-dependent chromatin remodeling complexes, which is found in eukaryotes. In other words, it is a group of proteins that associate to remodel the way DNA is packaged.
However, the chromatin remodeling activities of ISWI and SWI/SNF are distinct and mediate the binding of non-overlapping sets of DNA transcription factors. [ 3 ] The protein ISW1 is the first ATPase subunit which has been isolated in the ISWI chromatin remodeling family in the fruit fly Drosophila .
Gene encoding for ARID1A is the most frequently mutated SWI/SNF subunit across cancers. [9] This gene has been commonly found mutated in different cancers leading to loss of function, including gastric cancers, [10] colon cancer, [11] ovarian clear cell carcinoma, [12] liver cancer, [13] lymphoma [14] and pancreatic cancer. [15]
Following Spain's secession of Florida to the United States in 1819, the first permanent colonization of Key West began with American possession in 1821. [6] Legal claim of the island occurred with the purchase by businessman, John W. Simonton, in 1822, in which federal property was asserted only three months later with the arrival of U.S. Navy Lieutenant Mathew C. Perry.
Florida wildlife officials are caring for a rare two-headed snake after a family found the strange reptile in Palm Harbor. The southern black racer is bicephalic, meaning it has two heads, likely ...
The Florida Keys are a coral cay archipelago off the ... The Key Largo Woodrat is found only in the northern part of its namesake island and is a focus of management ...
Wildlife conservators found 500 pounds of pythons in a single day last month in Collier County, Florida.. The 11 Burmese pythons were found Feb. 21 in three different breeding aggregations, or ...