background and objectives: due to the importance of finding of new antibacterial agents, the antibacterial properties of prosopis cineraria aerial parts were investigated using a bioassay guided fractionation scheme. materials and methods: the organic extract was prepared via maceration in methanol, followed by the fractionation using n-hexane and ethyl acetate. the mics of fractions were deter...

A bioassay that used postexposure feeding depression in Daphnia magna Straus as an endpoint previously had been developed under laboratory conditions. Laboratory studies revealed that this was a sensitive, robust endpoint, which could potentially be used in an in situ bioassay. This study adapted the laboratory bioassay for use in the field and deployed D. magna in situ at four known or suspect...

Recently, Aronson and colleagues (1) reported that men withprostate cancer receiving approximately 5 g/d of fishoil combined with a low-fat diet (15% kcal from fat) for 4 to 6 weeks before prostatectomy had 32% lower tumor ki67 staining compared with men consuming a Western diet (45%kcal from fat). This study is of interest because thedata suggest that dietary modification can greatly reduce tu...