Fig. 4From: Detecting the colonization of ericoid mycorrhizal fungi in Vaccinium uliginosum using in situ polymerase chain reaction and green fluorescent proteinAnalysis of EMF colonization by in situ PCR. Bar is 20 μm. a negative control; b longitudinal sections of the roots of V. uliginosum 2 weeks after inoculation of EMF, indicating colonization. Positive signals are labeled with arrowheadsBack to article page