If you were working with a newly isolated bacterium, what would you have to be able to do before you could use gene fusions to identify virulence genes? Do these same restrictions apply to...

If you were working with a newly isolated bacterium, what would you have to be able to do before you could use gene fusions to identify virulence genes? Do these same restrictions apply to microarrays? What would you need to have to use microarray technology?