The phrase "a number of unexplored" is correct and usable in written English.
It can be used when referring to multiple items, topics, or areas that have not yet been investigated or examined.
Example: "The researchers identified a number of unexplored regions in the ocean that could hold valuable resources."
Alternatives: "several uncharted" or "many undiscovered".
However, a number of previously unexplored technical issues arise when using SOLiD technology to characterize microRNAs.
Taking into account that emerging modalities are so new, it is obvious that a number of phenomena remain unexplored and their possible effects are unknown.
The aim of this work, the largest prospective study to date, was to (a) attempt to replicate the previous observational associations between tic disorders and non-genetic risk factors, and (b) examine a number of additional, previously unexplored, potential risk factors for tic disorders using the Avon Longitudinal Study of Parents and Children ALSPACC).
A number of approaches still remain unexplored in ET genetics, including the contribution of copy number variants, uncommon moderate-effect alleles, rare variant large-effect alleles (including Mendelian and complex/polygenic modes of inheritance), de novo and gonadal mosaicism, epigenetic changes, and noncoding variation.
Our narrative reveals a number of important, yet previously unexplored, features of interwar science and medicine.
The social organization of the campaign reveals a number of important, yet previously unexplored, features of interwar science and medicine in Britain.
Some of the above-ground action — in particular some hectic vehicular mayhem — feels a little routine, and a number of potentially intriguing narrative avenues remain unexplored.
Mostly this implies leaving a number of potentially interesting and viable scenarios unexplored.
However, determinants of global methylation level among healthy individuals have remained largely unexplored, although a number of genetic and environmental factors are thought to influence the level of DNA methylation [ 10].
In-depth venom proteomics and transcriptomic analyses have recently become available for a number of venomous snake lineages, revealing a vast unexplored source of evolutionary innovation [ 2, 19, 20].
This frontier of microbial discoveries has largely been unexplored due to a number of challenges, which are due to the lower density of microorganisms in the air; inefficient retrieval of microbes and their nucleic acids from the air; lack of standardized approaches and methodologies; and bioinformatics-related challenges of de novo genome reconstruction.
