Nowadays, there is evidence that these polymorphisms have a relationship to such diseases or conditions where vitamin D has an essential role, for example, bone mineral density, osteoporosis and cancers of the breast and prostate [ 11– 13].
A good scientific background is essential, for example, for understanding the issues related to certain contaminants, why they could be injurious to health, and the extent to which they can degrade in the ground to form potentially toxic contaminants.
The assay turned out to be very accurate, with an impressive signal-to-noise ratio, which is essential, for example, for high-throughput screening.
That is essential, for example, for the analysis of black list contents, which might change between the time of collection and analysis.
In microorganisms it is essential, for example, for physiological adjustments to growth conditions as well as to stress response [24].
Support for abortion rights and gay rights, for example, is an essential litmus test for Democratic presidential candidates.
For example, phosphorus is an essential element for human bones skeleton and iron represents an important physiological function in the hemoglobin; other elements are important for activity of some enzymes and vitamins.
The sodium potassium ATPase is an ATP-powered ion pump that creates concentration gradients for sodium and potassium ions across the plasma membrane of animal cells, a process essential, for example, in the action potentials of nerve cells.
For example, thioredoxin is an essential processivity factor for bacteriophage T7 DNA polymerase.
The following section states few examples of biosurfactants as an essential component for inhibition of phytopathogens.
