The phrase "an active alternative" is correct and usable in written English.
It can be used when discussing options or choices that are currently available and can be actively pursued or implemented.
Example: "In our search for sustainable energy solutions, we found that solar power is an active alternative to fossil fuels."
Alternatives: "a viable option" or "a practical substitute".
A luciferase reporter assay confirmed the presence of an active alternative promoter downstream from the DMR.
The presence of an active alternative promoter was confirmed by performing a luciferase reporter assay in which the genomic region upstream of the SEPT9_v3 TSS was targeted.
However, because of the presence of subtle chest discomfort associated with dyspnea, medical decision making includes an active alternative diagnosis of atypical angina based on two of three positive criteria of exertional symptoms with symptom relief upon resting [ 5].
If locoregional radiotherapy following surgery of the primary tumor is considered to be of significant interest in this metastatic setting, accelerated radiotherapy may represent an active alternative to normofractionnated schedules.
The risk of CAD is not typically considered as an active alternative diagnosis for the CF patient; yet with aging, even CF patients will be at risk for CAD.
For example, the recommended comparator for a health economic analysis is a TAU control [ 70], while an active alternative treatment is likely to provide the most information for studies investigating mechanisms of action [e.g., [ 71]].
Generally, transcripts deriving from alternative first exons are frequently observed in mammalian genomes, with an estimated >20% of genes having active alternative promoters [ 18].
We next considered those genes that have two active alternative promoters and checked for the differential activation or inactivation of the promoters.
Today, many doctors will recommend more active alternative therapies like hyperbaric oxygen therapy and various foods and supplements containing omega-3 to speed the healing of the injury.
The sheer complexity and tight regulation of this multistep process apparently requires engagement of active alternative splicing for multiple genes, especially transcriptional factors in germline.
Patients were considered appropriate for the study if they had a leading diagnosis or active alternatives that suggested an infectious disease at the time of admission.
