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Dialysate O2 (blue) and K+ levels (black) were monitored for 7 days post-CCI. (A) An example of two SDs in quick succession with a null O2 response. (B) An example of three SDs occurring at ∼6 min intervals: the first two SDs are accompanied by transient decreases in O2, but the third is not. Red asterisks mark SDs.
