Sentence examples for challenged previously from inspiring English sources

The laws had been challenged previously on different grounds and found constitutional by the state and federal courts.

This idea has been challenged previously by using follicle kinetics studies and demonstration of mitotically active germ cells in the postnatal mouse ovary (Johnson et al., 2004; Kerr et al., 2006; Zhang et al., 2008).

The findings challenged previously held views - based on several lines of evidence - that modern humans had replaced the Neanderthals with little or no gene flow occurring between the two groups.

A second school of thought, represented by the work of Paul Collier, has been influential because it challenged previously held assumptions that resource scarcity was the primary driver of conflict; in fact, abundance is strongly related to the presence of violent conflict.

Since 1988, chess theorists have challenged previously well-established views about White's advantage.

The patients of the present study had been challenged previously with gluten and 5/21 were gluten reactive and DQ2 positive [ 14].

We must challenge previously accepted working practices.

Referring to two forthcoming by-elections, where UKIP candidates will challenge previously Conservative and Labour seats, Mr Farage said: "We've now got the Labour Party as worried in Heywood and Middleton as we've got the Conservatives in Clacton.

These novel nitrifiers have been identified in a range of engineered, natural freshwater and terrestrial ecosystems, challenging previously held knowledge on the key microorganisms and biochemical pathways controlling nitrification.

Calcification has emerged as a significant predictor of cardiovascular morbidity and mortality, challenging previously held notions that calcifications stabilize atherosclerotic plaques.

It has also been recently emphasised that it is not a highly recoverable disorder, even when treated with established pharmacotherapy [ 2], challenging previously widely-held ideas on its treatability [ 3].