Contribution of ATP - sensitive potassium channels to hypoxic hyper - polarization in rat hippocampa

A self-standing urinary bag structure comprising a pair of generally rigid leaves hingedly secured together at the apical portions thereof and having a bag suspended therebetween. The bag is so positioned as to extend partially beneath the leaves when the structure is suspended from above and to force the leaves apart into a self-standing condition when the structure is placed upon a support surface disposed therebeneath. In one embodiment the leaves are integrally joined to the bag and in another embodiment the leaves are removable from the bag.