The phrase "alter the viability of" is correct and usable in written English.
It can be used when discussing changes that affect the feasibility or effectiveness of something.
Example: "The new regulations may alter the viability of small businesses in the area."
Alternatives: "change the feasibility of" or "impact the effectiveness of".
Will the protracted Eurozone crisis and waning public support for European institutions and policies alter the viability of the European project?
Results from the in vitro cytotoxicity studies showed that blank NPs did not alter the viability of both cells lines, except for concentrations higher than 600 μg/mL.
It has previously been shown that silica-based nanoparticles do not alter the viability of cultivated lymphocytes on completion of a 24-h exposure.
One possible mechanism used by males to alter the viability of their sperm is to differentially invest in their seminal fluids.
Our results show that male T. oceanicus do not alter the viability of their sperm in response to the local relatedness of rival males; males transfer sperm of similar viability irrespective of whether they are competing with a full sibling or non-sibling male.
This can alter the viability of research results and, hence, lead to problems replicating previous studies.
When transgressed, these limits will trigger a cascade of ill effects, putting human life and civilization in peril and irreversibly altering the viability of habitats for virtually every species on Earth.
Because the pandemic virus contains M and NA gene segments from Eurasian-lineage swine influenza viruses and PB2, PB1, PA, NP, and NS gene segments from TRIG viruses, it is not surprising that several pandemic (H1N1) 2009 genes could be introduced into endemic US swine influenza viruses without altering the viability of the progeny viruses.
Such findings are in accordance with previous results obtained in wheat, indicating that the fungus most likely behaves as a hemibiotroph, growing intercellularly at the front of colonization without altering the viability of plant cells at early steps of the infection process then inducing cell death in more colonized tissues [ 65].
The observed protective effect of the E1A siRNA could not be attributed to a possible unspecific general increase in cellular metabolic activity, because neither the E1A siRNA nor any of the other siRNAs altered the viability of uninfected cells (Supplementary Fig. 6).
Moreover, we found that applied voltages (15 25 kV) did not alter the viability and proliferation of encapsulated mesenchymal stem cells post-encapsulation and cryopreservation as compared to air flow.
