The phrase "an extremely broad host" is correct and usable in written English.
It can be used to describe a wide variety of subjects or entities that are included in a particular category or group.
Example: "The research study examined the effects of the new drug on an extremely broad host of patients, ranging from children to the elderly."
Alternatives: "a very diverse group" or "a wide array of subjects".
Amongst these, Beauveria bassiana with an extremely broad host range is already being marketed as commercial biopesticide for the control of several agricultural insects (Feng et al. 1994; Zimmermann 2007).
The ubiquitous bacteria S. marcescens can be found in both aquatic and soil ecosystems, and have an extremely broad host range including plants, nematodes, insects and mammals [26], [45]-[47].
The cat flea, known as an indiscriminate feeder, has an extremely broad host range.
Mycobacterium bovis has an extremely broad host range which makes bovine tuberculosis (bTB) difficult to eradicate worldwide.
Interestingly, IncP-1 plasmids have an extremely broad-host range in Gram-negative bacteria and are efficiently transferred from the host to soil bacteria [43], [44].
In addition, seven new families, the Clavochlamydiaceae, Criblamydiaceae, Parachlamydiaceae, Piscichlamydiaceae, Rhabdochlamydiaceae, Simkaniaceae, and Waddliaceae were recently described within this phylum [ 5], revealing a previously underestimated diversity of these elusive microorganisms, which is also represented by their extremely broad host spectrum.
To conclude, this study provides the first thorough ABC gene analysis of a polyphagous arthropod herbivore and represents a useful resource for future biochemical and toxicological studies on the role of ABC transporters in the extremely broad host range and development of pesticide resistance of T. urticae.
But good cause or not, they discovered that acting - especially in an extremely broad comedy -- is a hoot.
If there was a conspiracy, it was an extremely broad, disorganized, decentralized, and, in some measure, inadvertent one.
