Sentence examples for difficult to test how from inspiring English sources

Fetal surgery has been around for nearly 30 years, but it's proven difficult to test how well it really works.

Because P. vivax can't be grown in the lab, it is difficult to test how the extra copy of the gene might change the parasite's behavior.

Until recently, it was extremely difficult to test whether (or how) gene expression changed for most species involved in putative parallelisms.

As such, predicting how climate change will impact human and animal societies has also been difficult to test.

"The problem is it's really difficult to test, because we can't take a Neanderthal and sit them next to a fire to see how they react".

How all of the possible variables affect the final outcome remains unknown, and it would be extremely difficult to test each of the variables independently.

It is also difficult to test for the toxin.

So it's difficult to test the reduced-pleasure hypothesis.

It is, however, difficult to imagine how else to test this model, proponents of Guyton's model might suggest.

It is, however, difficult to see how this test arrangement would prevent the rats with perirhinal lesions from showing a marked reduction in overall exploration if stimuli rapidly appear familiar following immediately prior object experience (McTighe et al., 2010; Romberg et al., 2012).

It is difficult to assess how these tests would perform at lower CD4 counts.