Fig. 3. Behaviour of isolated mitochondria. (A) Mitochondria were isolated from a Neurospora strain expressing mtGFP and subjected to fluorescence (left) and phase contrast (right) microscopy. The insert shows an enlarged section from the center of the image. (B) Isolated mtGFP-containing mitochondria were incubated with rhodamine-labelled microtubuli and subjected to fluorescence microscopy. Bars, 5 µm (A,B); 1 µm (A,inset).