Sentence examples similar to it has presented obstacles from inspiring English sources

Although the laboratory techniques used in reverse genetics are fairly routine at this point, safety and efficiency issues have presented obstacles to it completely supplanting the reassortment method.

The cabinet has sent legislation to the Parliament softening the de-Baathification law that had presented obstacles to former Baathists' working in government jobs.

While the island's topographic and territorial constraints may have presented obstacles to such a transition, the British non-development policy towards the island may have been more decisive.

When you're able to get inmates to think about what they want their life to become, and to understanding their past may have presented obstacles, they start to see the benefit [of therapy].

When you're able to get inmates to think about what they want their life to become, and understanding how their past may have presented obstacles, they start to see the benefit [of therapy].

These factors have presented obstacles in developing an acceptable screening and surveillance strategy.

It has presented unexpected challenges.

The dearth of significant, unheard Joplin recordings — a five-CD boxed set in 1999 essentially cleared the vaults — has presented an obstacle to maintaining Joplin's presence in the marketplace.

Lesion size has presented an obstacle for detailed molecular studies on archival paraffin-embedded tissue specimens of proliferative breast lesions.

But now the Valley's very success has presented it with a geographical obstacle that won't be overcome so quickly.

The current poor understanding of the structure and properties of the DEJ has presented a major obstacle to designing better therapeutic protocols for complications concerning the DEJ.