To compare, experiments were conducted by exposing similar specimens in the same exposure media under unstressed conditions.
After 8 weeks exposure to 10 ppb Aroclor 1254 in water, clams were depurated for 10 weeks, in the same exposure channel or after transfer to clean systems.
The employed two-species test allowed distinguishing, in the same exposure conditions, effects due to waterborne exposure together ingestion at the sediment surface (freshwater grazing snail P. acuta) and exposure by burrowing activities (sediment-dwelling insect larvae C. riparius).
The estimated time of the MRCA for the cluster of subtype C infections identified in UK MSM (Figure 1) approximately corresponds to that estimated for a cluster of subtype A infections identified previously in the same exposure risk population (1989 1994) [1989 1994
We previously published a study demonstrating the use of a single unit QCM in the same exposure chamber [ 15].
Both floor cleaning methods were in the same exposure category, even though there were important changes in the cleaning procedures (such as dipping the hands into cleaning solution during the microfiber mop method).
