1. The purification of ion channels from excitable cells

   • Jane A. Talvenheimo

   Topical Review Pages: 77 - 91

2. Role of passive potassium fluxes in cell volume regulation in cultured HeLa cells

   • D. R. Tivey
   • N. L. Simmons
   • J. F. Aiton

   Articles Pages: 93 - 105

3. Na⁺/Ca²⁺ countertransport in plasma membrane of rat pancreatic acinar cells

   • E. Bayerdörffer
   • W. Haase
   • I. Schulz

   Articles Pages: 107 - 119

4. Sidium-dependent ion cotransport in steady-state Ehrlich ascites tumor cells

   • Charles Levinson

   Articles Pages: 121 - 130

5. Characterization of a Na∶K∶2Cl cotransport system in the apical membrane of a renal epithelial cell line (LLC-PK₁)

   • Colin D. A. Brown
   • Heini Murer

   Articles Pages: 131 - 139

6. Protamine reversibly decreases paracellular cation permeability inNecturus gallbladder

   • Michael Fromm
   • Carlos E. Palant
   • Ulrich Hegel

   Articles Pages: 141 - 150

7. Channel formation in phospholipid bilayer membranes by the toxin ofHeminthosporium maydis, race T

   • Marcia J. Holden
   • Marco Colombini
   • Heven Sze

   Articles Pages: 151 - 157

8. The mechanistic nature of the membrane potential dependence of sodium-sugar cotransport in small intestine

   • Diego Restrepo
   • George A. Kimmich

   Articles Pages: 159 - 172

9. Time-dependent phenomena in voltage-clamped epithelia

   • J. Fernando Garcia-Diaz
   • Alvin Essig
   • Yuichi Suzuki

   Letters to the Editor Pages: 173 - 176