Inoculum of arbuscular mycorrhizal fungi, with growing use in horticulture, is produced mainly in two technically different cultivation systems: in vivo culture in symbiosis with living host plants or in vitro culture in which the fungus life cycle develops in association with transformed roots. To evaluate the effectiveness and the infectivity of a defined isolate obtained by both production m...

Thisessaydiscusseslupus, an imnnme-systemdysfunctionthat affects may, especiallyyoung women, but is recognized by all too few. Its multiple manifestations have been baffling to researchers for over 100years; only rexently have the tools of molecular biology and immunogenetics reveafed substantial new information on its mechanism of autoimmunity. Still, the ukimate trigger for lupus remains a my...

In the present study, we examined the frequency dependence of auditory search performance. Detection thresholds were measured for an 800-Hz target tone in a sequence of distractor tones (informational masking) as a function of frequency separation between the target and the distractor tones. The results showed that the thresholds decreased monotonically with frequency separation increasing. To ...