Sentence examples for been challenged with increasing from inspiring English sources

And its military might, which looked vulnerable as early as 1982, when 250 Marines lost their lives in the Beirut embassy attack – a tragedy that reportedly anguished Reagan for years – has been challenged with increasing frequency, and success.

We also performed peptide titration curve in which CD4+ T cells were challenged with increasing concentration of the relevant peptide (Fig. 1C).

Each cell line was challenged with increasing concentrations of serotonin or ritanserin, ranging from 0-50 μM, for 24 hours.

Xenopus laevis oocytes clamped to a holding potential of −60 mV were challenged with increasing concentrations of pCA.

At 80% confluence, A549 cells were challenged with increasing doses of cisplatin (0 40  μg/ml) either alone or in combination with CFTRinh-172 (5  μM).

Animals were challenged with increasing doses of methacholine in 0.9% NaCl, and flow and pressure signals were analyzed using biosystem XA software (Buxco) 34.

Two hours before euthanasia and necropsy, a subgroup of mice was challenged with increasing concentrations of methacholine (MCh) aerosol in order to determine pulmonary responsiveness.

The cell lines were challenged with increasing concentrations of ATRA, AM580, UVI2003, and BMS961 for 3 (data not shown) and 6 days prior to evaluation of cell growth.

In the presence of furan aldehydes though, the detoxification abilities of JWCB044 led to increased viability and biomass production when cultures were challenged with increasing concentrations of furfural or 5-HMF.

HT1080-CD40 and HeLa-CD40 transfectants along with their corresponding CD40-negative counterparts were challenged with increasing concentrations of scFv G28-TRAIL, and the following day the viability of the cellscFv G28-TRAILned by crystandviolethetaining.

Cells were seeded overnight in 96 well plates (10 cells per well) and the next day were challenged with increasing doses of live bacteria alone or in combination with live C. albicans, at 10 1 bacterial : fungal cell ratio.