Phospholipids associated with purified hemichannels identified by class, chain length and number of desaturations. Radial distribution showing total number of carbon atoms in the fatty acid acyl chains of phospholipids common to both Cx26 and Cx32 (a), unique to Cx26 (b) or unique to Cx32 (c). The numbers of fatty acid acyl chain desaturations (zero to five or more) are shown on the radial arms. Abbreviations as in Figure 1. The species shared between (a) and (c) differ in glycerol-alkyl chain linkage.