part of tube development long descending thin limb development long descending thin limb bend development biological_process The process whose specific outcome is the progression of the long descending thin limb bend over time, from its formation to the mature structure. The long descending thin limb bend is a part of the descending thin limb of a long nephron that lies beyond the prebend segment. GO:0072065 2010-01-25T04:13:38Z mah