Sentence examples for challenge remain from inspiring English sources

The political factors that focused attention on the East Asian challenge remain in place, however.

While investors may have taken a dislike to web-based firms, problems of embracing or responding to the Internet challenge remain for managers of established firms.

However, the underlying mechanisms that maintain metabolic balance during extremes of nutrient challenge remain poorly understood.

The biological events associated with such ongoing allergen challenge remain largely undefined.

Localized concentrations of TNFα within peripheral nerves during an immune challenge remain to be determined, and may very well mimic or exceed concentrations used in this study.

In other systems, γδ T cells may up-regulate surface markers following recognition of Toll-like receptor ligands [ 42], or as a result of TNF activity [ 43], although the mechanisms driving activation of γδ T cells both in naive lungs and following in vivo pathogen challenge remain unknown.

But the challenge remained.

Other challenges remain.

But large challenges remain.

Challenges remain, though.

But huge challenges remain.