September 2007 - Wadsworth Center

TABLE 1: Summary of features that differentiate some arthroconidia- producing fungi.Characteristic Malbranchea sp. Coccidioides Arthrographis sp. Odiodendron sp.immitis/posadasiiGrowth oncycloheximidemedium (25°C)No growth Growth No growth No growthConidiophores None Present Present Dark-coloredGrowth andmorphology(37°C)No or poor growthThick walledspherules filledwith endospores*Very little growthVery little growthC.immitisGenProbeNegative Positive Negative Negative*In vitro conversion to tissue form may not be easily obtained, may require prolonged incubationunder 5% CO 2 .13