Figure 2.

A semilogarithmic graph of the disappearance of ¹²C¹⁸O¹⁶O under the same conditions as in Fig. 1, except lysate was added instead of red blood cells. At the arrow, hemolysate was added equivalent to a cell fractional water volume, v, of 0.001. In the DIDS experiment (solid circles), the solution contained 0.4 μM DIDS.