part_of part of part of Homo sapiens Homo sapiens organ part vasa recta vasa recta ascending limb uberon KUPO:0001005 This class was created in order to align KUPO with CL. The original class was undefined, and the intended meaning is not clear, may be obsoleted in future. The vasa recta is parallel to the loop of Henles, this may refer to the portion of the vasa recta parallel to the ascending limb UBERON:0009091