Sentence examples for brain is difficult to from inspiring English sources

Something as inherently complex and mysterious as the brain is difficult to describe in literal terms.

Pain resistance is used as an indicator of endorphin levels because their presence in the brain is difficult to test; the molecules would not appear in blood samples because they are among the brain chemicals that are prevented from entering circulating blood by the so-called blood brain barrier.

An eye lens can be prepared without substantial impurities, whereas a certain area of the brain is difficult to prepare without contamination of surrounding areas.

How much such antagonism contributes to sex-bias in the avian brain is difficult to say at present.

How BACE1 inhibition translates to Aβ reduction in the brain is difficult to estimate, although some insight into this question may be gained by considering experiments in BACE1 knockout mice.

Synthetic phantoms are valuable tools for training, research and development in traditional and computer aided surgery, but complex organs, such as the brain, are difficult to replicate.

Although BDNF levels in the brain are difficult to determine in humans, BDNF rapidly crosses the blood brain barrier.

However, the delivery of neurotrophic factors to the brain is difficult due to their large size and poor bio-distribution.

As this damage is usually accompanied by atherosclerosis of the arteries of the brain, it is difficult to know how much of the change is the result of impaired blood flow and how much is related to normal aging.

Trouble is, the substantia nigra is buried deep in the brain and is difficult to reach.

In contrast to these approaches, post-mortem brain tissue is difficult to obtain, and some RNA quality concerns exist that might potentially influence transcriptome studies [7], [8].