The phrase "a number of microorganisms" is correct and usable in written English.
It can be used when referring to multiple microorganisms in a scientific or general context.
Example: "In the study, a number of microorganisms were identified as potential contributors to soil health."
Alternatives: "several microorganisms" or "various microorganisms".
The skin is host to a number of microorganisms, especially bacteria and fungi.
Encephalitis, an infection of the brain, may be caused by a number of microorganisms including viruses, bacteria, and fungi.
Vitamin B12, a complex water-soluble organic compound that is essential to a number of microorganisms and animals, including humans.
The fermentation process involves a number of microorganisms, including a variety of yeasts and bacteria, and the resultant probiotic drink is slightly effervescent with a mild sour or vinegar flavour.
Feathers (composed of protein keratin) are metabolized by a number of microorganisms as a source of carbon and nitrogen.
Two types of ferulic acid side chain cleavages have been reported for a number of microorganisms (Rosazza et al. 1995).
Although the earliest good evidence of land plants and animals dates back to the Ordovician period, and a number of microorganism lineages made it onto land much earlier, modern land ecosystems only appeared in the Late Devonian, about.
A number of microorganism genera are employed to produce 2,3-BD, including Klebsiella, Enterobacter, Bacillus, and Serratia [ 5].
These small organic acids are then oxidized completely to H2O and CO2 by a number of respiring microorganisms using a variety of oxidized inorganic compounds as electron acceptors.
However, bacteria count during the plant emerging stage had showed the decrease of a number of oligotrophic microorganisms by 54% comparing to control.
A number of pathogenic microorganisms have evolved original strategies to pass through the apical epithelial barrier and penetrate into the intestinal epithelium.
