this k+/h+ antiport activity appears responsible for a respiration-dependent extrusion of endogenous k+ , for passive swelling in k+ acetate and other media , for a passive exchange of matrix 42k+ against external k+ , na+ , or li+ , and for the respiration-dependent ion extrusion and osmotic contraction of mitochondria swollen passively in k+ nitrate .
C0013604
swelling
C0038999
swollen