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Fig. 4A. Photographs used to compare radiofrequency-induced coagulation that
was created ex vivo in bovine kidney by monopolar and bipolar modes. Note that
short- and long-axis diameters of coagulation necrosis were larger in bipolar
mode. B, Photographs show specimen from group A (monopolar mode)
(A) and from group B (hypertonic-saline-augmented bipolar mode)
(B).