Fig. 5.

Ca²⁺-capacity of RBM in the presence of TSPO ligands and G3139. Ca²⁺-capacity was measured with Ca²⁺-sensitive electrode as described in Materials and methods in control RBM (trace a) and in RBM incubated in the presence of 5 μM G3139 alone (trace b) and in its combination with 1 μM protoporphyrin IX (trace c) and 100 nM PK11195 (trace d). The arrows indicate where CaCl₂ (60 μM) was added to the mitochondrial suspension.