Fig. 4. Quantification of bulge density in CGNs by FESEM analysis. (A) Bulges were counted and expressed as bulge density (bulges µm^–2) in control cells or in cells treated for 1 hour with 200 nM pancreatic PLA2 or with 5 nM taipoxin or ß-BTx. (B) Dose-dependent quantification of bulges in CGNs treated for 1 hour with taipoxin concentration 0.1-5.0 nM. Bars represent the data obtained from three different cell preparations ± s.d.