The phrase "a definite role of" is correct and usable in written English.
It can be used when discussing a specific function or responsibility that something or someone has in a particular context.
Example: "The study highlights a definite role of nutrition in maintaining overall health and well-being."
Alternatives: "a clear function of" or "a specific role of".
Nonetheless, a definite role of p38 MAPK in CAR activation has yet to be established, given that activation of p38 MAPK appears to enhance some but not all target genes of hCAR.
The results of experiments performed under conditions of microgravity (MG) or under its simulation on the horizontal clinostat (HC) with the callus, seedlings of various species and embryogenic structures have revealed a definite role of gravity as an ecological factor in the processes of cytomorphogenesis, growth, and development.
It has been described as a term "of encomiastic poetry", but there also is evidence that it implied a definite role of military leadership.
The exact meaning of bretwalda has been the subject of much debate; it has been described as a term "of encomiastic poetry", but there also is evidence that it implied a definite role of military leadership.
The exact meaning of the title has been much debated; it has been described as "a term of encomiastic poetry" but there is also evidence that it implied a definite role of military leadership.
However, concrete evidence is lacking for a definite role of Cav-1 not only in acquiring metastasis but also in metastatic progression.
Although there is currently no evidence for a definite role for pepsin in the pathogenesis of esophagitis [ 6], experimental evidence has demonstrated a pathogenic role for pepsin in the development of acute esophagitis models in rabbits or cats [ 7, 8].
These linkages are said to be novel, as the present annotation does not suggest any definite role of these genes in mycolic acid biosynthesis.
So this Ernesto that you have in the film is the Ernesto who at the age of five or six could not go into the water because of his asthma and the shortcomings of his social class, but there was already something in him anticipating the man who would implode the limits of that social class, and play a definite role in our continent, of Latin America.
However, while it is acknowledged that antipsychotics have a definite role in the treatment of pediatric subjects, there is a dearth of well-controlled efficacy and safety data in this population [ 3].
The authors conclude that FDG uptake should have a definite role in the evaluation of response to therapy and in the prediction of progression-free survival, which seems rather progressive considering the number of included patients (n = 25).
