The activated charcoal assay used the same experimental design as the volatile assay, except the remaining two compartments were each filled with 1 g of activated charcoal (Darco®, 20 40 mesh particle size, granular, Aldrich, Milwaukee, WI) wrapped in KimWipes.
This generalist caterpillar species was used in place of E. solidaginis for the volatile-induction assays because it triggers a strong volatile response from S. altissima and because the galling habit of the flies makes them difficult to use for such assays [ 36].
Second, the volatile (compartment) assay used compartmentalized petri dishes where the bacteria were grown on LB agar or LB liquid and M. oryzae was grown on CM agar in separate compartments.
The procedures for assaying chemotaxis to volatile odorant and assaying avoidance from Cu2+ ion were according to Bargmann et al. (Bargmann et al. 1993) and Wicks et al. (Wicks et al. 2000), respectively.
For maximum sEH activity in cell-free in-vitro assays, volatile salts and stabilizing protein BSA are usually present in high concentrations [ 3].
However, a variety of nucleic acid amplification, alternative antigen, and volatile organic compound detection assays are in the pipeline or are proving to have utility in distinct patient populations.
Glover says that U.K. government scientists had already shown that it was possible to create a test-tube assay mimicking the volatile response seen in humans; he thinks the MHRA should have compelled the drug developer to produce a test based on the drug's mechanism in humans and carry it out before the trial started.
Headspace analysis of bacterial volatiles in combination with behavioural assays led to the identification of six compounds that elicited a behavioural effect in A. gambiae.
Fruits (red, ripe fruits of similar size, age, and environment) were assayed for the volatile and also for transcripts associated with receptacle/achene ripening.
Due to the transient and volatile nature of NO, the assay used estimated NO blood levels by measuring its two stable breakdown products, nitrate (NO3) and nitrite (NO2), that can be easily detected by photometric means.
