The phrase "a zone of clearance" is correct and usable in written English.
It can be used in contexts related to safety, regulations, or areas designated for specific purposes, such as construction or environmental management.
Example: "Before starting the construction project, we need to establish a zone of clearance around the site to ensure safety for workers and the public."
Alternatives: "a safety zone" or "a clearance area".
A zone of clearance around the well was observed for further studies.
Colonies which produced a zone of clearance in the presence of end-product inhibitors and whose zone of clearance was substantial as compared to parent were taken for stability studies.
Screening of 70,000 recombinant clones for proteolytic activity revealed one clone carrying recombinant plasmid designated as pSP1 that exhibited a zone of clearance on LB skim milk agar plate after 36 h of incubation at 37°C (Figure 1).
Coriander seed, lemon balm, peppermint and tea tree essential oils demonstrated strong antibacterial effects against E. coli in a zone of clearance assay (and pine had a more moderate effect), indicating that they are bacteriocidal towards E. coli.
Essential oils were tested for their ability to inhibit E. coli growth in disc diffusion assays and in liquid culture, and to kill E. coli in a zone of clearance assay.
DNase production was identified by a halo zone of clearance (DNA degradation) around the supernatant deposition well.
The survivor microbial colonies after the UV treatment were then selected for cellulase production by a similar zone of clearance method either using 0.05 % congo red dye as mentioned earlier.
Among these isolates, an actinomycete with maximum zone of clearance ratio on the CMC agar plate with a cellulolytic index value of 34 mm was selected (Additional file 1: Figure S1).
For example the bacterium Nocardia asteroides was most susceptible to levofloxacin when grown on MH agar, with an average 38.4 mm mean zone of clearance, however, when grown on poloxamer gel imipenem was the most effective antibiotic producing a 27.53 mm mean clearance zone.
Non-denaturing SDS-PAGE analysis with equal protein loadings of culture filtrates on a CMC gel from the UV-treated cells showed maximum zone of clearance with the SGUV30 strain (Fig. 3).
UV1 and UV2 showed maximum zone of clearance on CMC agar plate with a cellulolytic index of 34 and 36 mm (data not shown) and were selected for strain improvement studies (Additional file 1: Table S1).
