Words similar to natural
Example sentences for: natural
How can you use “natural” in a sentence? Here are some example sentences to help you improve your vocabulary:
And letting an animal die from natural causes is not and never has been a crime.
Constructs for generating the control reagents are available through the American Type Culture Collection (ATCC); accession numbers are given in Table 1. We describe how scaled frequency normalization can be used to estimate message abundance in cRNA, compute a chip sensitivity metric and provide a natural scale for damping spurious signals from below-sensitivity mRNAs.
The implementation of selective contracting in California in 1982 offers a unique natural experiment to study the response of hospitals to changes in the nature of competition.
As we pointed out in chapter 3, the White House is not a natural locus for program management.
In some circumstances, CD4 +and CD8 +T cells were rendered inactive in tumor-bearing hosts [ 8 ] . The inactivation of CD4 +T cells has been attributed either to the tumor cells themselves or to bone marrow-derived cells [ 9 10 11 ] , whereas antigen ignorance or loss of memory have been postulated to underlay that of CD8 +T cells [ 12 13 ] . Other studies have suggested that tumor cells can secrete immunosuppressive factors such as TGF-β or express Fas ligand to induce apoptosis of infiltrating lymphocytes [ 14 15 16 ] . Furthermore, the tumor vasculature appears to be quite different from normal blood vessels, in terms of structural organization, interstitial pressure, and flow patterns [ 17 ] , and in reduced lymphocyte and natural killer cell homing and adhesion [ 18 19 20 21 ] . The existence of significant barriers to effective immunological destruction is further illustrated by a mouse model of concurrent multistage tumorigenesis and anti-oncogene autoimmunity, wherein progenitor dysplastic lesions are infiltrated and disrupted, while solid tumors are not [ 22 ] . The hypothesis is that the microenvironment of certain types of solid tumor can serve to locally suppress T cell infiltration.
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