The phrase "a definite population" is correct and usable in written English.
It can be used in contexts where you want to specify a particular group of individuals or entities that are clearly defined.
Example: "The study focused on a definite population of urban teenagers aged 13 to 19."
Alternatives: "a specific group" or "a distinct population".
The concept of stem cells as a definite cell population in a supportive microenvironment (niche) is now widely accepted, and regarded as the source for tissue renewal [ 1].
By contrast, the transposon based approach enables with only a few initial starter lines the successive accumulation of novel independent insertions in a definite plant population [ 28, 40].
N is the definite population of the communities.
We could also detect Th17 cells in primary HNSCCs of all locations (0.8467±3.567% of all TILs and 10.65%±3.567 of all T cells) except for larynx carcinomas, which were sparely infiltrated by lymphocytes and so we were not able to detect a definite Th17 cell population.
Choosing a definitive cut off population size for the distinction between rural and urban is difficult, but from Figure 3, (Supplementary Table 2) plotting the proportion of rural samples against population size for different distances, there seems to be a definite discontinuity at around population size 125 000 (eg Doncaster).
Thus, we cannot draw a definite conclusion for these populations.
It is important to focus on a specific population with a definite indication.
The highest level of evidence requires optic disc and visual field abnormalities (VCDR or asymmetry in the 97.5th percentile or more for the normal population with a definite glaucomatous visual field defect).
Community members who met all of the following criteria were included in the study population: 1) a definite diagnosis of type 2 diabetes according to health centre records; 2) identified as Aboriginal; 3) aged 16 years or older; and 4) lived in the community for 6 months or more during the previous 12 months.
This is a definite possibility, given that inbred populations tend to have a higher concentration of deleterious recessive traits than less inbred populations [ 20].
