penicillium marneffei types and drug susceptibility the pcr fingerprints of 30 penicillium marneffei isolates from chiang rai in northern thailand and bangkok in central thailand were studied through use of singlenucleotide primers gaca4 and the phage m13 core sequence discrimination of fingerprint patterns was based on differences in the number of major bands the p marneffei isolates were divided into four types ie a b c and d type a was found in two isolates from chiang rai 67 types b and c respectively were found in two 67 and one 33 isolates from bangkok the predominate type d 833 was found in isolates obtained from chiang rai and bangkok the pcr fingerprinting method was found to be useful for the epidemiological study of p marneffei a dimorphic opportunistic fungus and an emerging pathogen in the hiv pandemic in vitro drug susceptibility testing by broth macrodilution to four antifungal agents against the yeast form of p marneffei was performed the mic ranges for amphotericin b fluconazole itraconazole and ketoconazole were 012505 4080 0032 and 0125 microgramml respectively