Sentence examples for difficult to assay from inspiring English sources

This portion of plasma is difficult to assay consistently owing to the difficulty of preparing PPP without causing release of serotonin from platelets and without platelet contamination.

Human genomic samples are complex and are considered difficult to assay directly without denaturation or PCR amplification.

Secondly, the biophysical structure and stability of the resultant product are difficult to assay as an alum complex.

Despite the fact that genetic markers have proven to be highly useful in plant breeding for marker-assisted selection of simple traits that are difficult to assay [13] [15], they have their limitations when it comes to complex phenomenons involving many genes, such as heterosis.

The rapidly progressive nature of B16 melanoma makes it difficult to assay tumor infiltrates at later time points than Day-15, however by using an asymmetric tumor challenge we were able to ask whether these enhanced effector to regulatory cell ratios were maintained.

These enzymes are known to be difficult to assay.

Mononucleotide repeats can be difficult to accurately assay and are generally eliminated from the SSR analysis [ 45, 72- 74] and consequently these repeats were excluded from this study.

Researchers report in a paper to appear in the Annals of Mathematics that they have developed a powerful new "sieve" for estimating the abundance of primes in sparse sequences of integers, which have been difficult or impossible to assay until now.

It is more difficult and less accurate to assay low levels of biomarkers than high levels.

Membrane localized proteins are difficult to purify and assay 53 and therefore, cytoplasmic proteins are more favorable as drug targets.

This model provides a mechanistic explanation for why some genome regions are particularly difficult to amplify and assay in many procedures, and importantly it also explains inter-sample variability of this behavior.