Words similar to indicator
Example sentences for: indicator
How can you use “indicator” in a sentence? Here are some example sentences to help you improve your vocabulary:
For much of the 20 thcentury the secondary sex ratio (male births/all births) has been declining in many countries [ 16 17 18 ] . It has been speculated that this declining sex ratio is a sentinel indicator of environmental contamination [ 17 ] , although others have argued that, on a population level, this is not the case [ 16 18 19 20 21 ] . There is evidence, however, that hormonal levels around the time of conception are associated with the sex ratio of offspring [ 22 ] , and there is compelling evidence that exposure to particular chemicals does lead to changes in the sex ratio of offspring [ 23 24 25 26 27 ] , as seen, for example, with exposure to dioxins following an explosion at an herbicide plant in Seveso, Italy [ 26 27 ] . Animal studies have suggested that exposure to PCBs may lower the sex ratio of offspring [ 28 29 30 ] . Studies among human populations exposed to PCBs in different settings, however, have suggested increases [ 31 ] , decreases [ 32 33 ] , or no change [ 34 35 ] in the sex ratio.
Two secreted proteins or protein complexes are involved in sensing cell density [ 5 ] . Prestarvation factor (PSF) is a glycoprotein that is secreted when cells are growing and accumulates as an indicator of the ratio of cell density relative to the supply of food [ 6 7 ] . When the ratio of Dictyostelium cells to nutrients is above a certain threshold, PSF induces the expression of several early developmental genes including discoidin I, lysosomal enzymes, and some components of the cAMP pulsing system [ 8 9 ] . Once nutrients are depleted, PSF production declines and a second cell density-sensing pathway is activated.
Using these plasmids as a starting point, a novel indicator of the inducible gene expression system was constructed as follows.
Gross national saving is a good indicator of resources available both to
Staining of the microarray filter with a fluorescent nucleic acid indicator
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