The phrase "are present in roughly" is correct and usable in written English.
It can be used when discussing the approximate presence or occurrence of something within a certain context or dataset.
Example: "The species are present in roughly 30% of the surveyed areas, indicating a significant distribution."
Alternatives: "are found in approximately" or "exist in about".
Strong core fields are present in roughly 50% of stars above 1.5 solar masses, suggesting that long-lived convective core dynamo-generated fields are common within these stars.
The model also shows that the proteins involved in the same steps of the vesicle cycle are present in roughly equal amounts within the terminal, raising the question of how their synthesis is regulated such that each set of proteins is present at the right concentration.
Intracranial calcifications are present in roughly 90% of younger patients.
BRAF mutations that result in constitutive cell proliferation are present in roughly 50% of malignant melanoma.
The tool mainly involved in the development of this new assist device is the metal alloy of nickel and titanium (Ni-Ti) Ninitol, where the two elements are present in roughly equal amount.
At the time of competitor addition (t=0), Smc1 and Smc3-FLAG are present in roughly equal proportions in the FLAG immunoprecipitate, indicating efficient binding, but the amount of Smc1 that co-precipitates with Smc3-FLAG gradually declines with time.
Though these strategies are presented in roughly historical order, each strategy is still embodied in ongoing conversations in the philosophical literature.
In women, however, the mutation was present in roughly the same fraction in both age groups.
(That version of the gene was present in roughly equal numbers among kids who were and weren't breastfed).
For Heinz, the critical flavor components — vinegar, salt, tomato I.D. (over-all tomato-ness), sweet, and bitter — were judged to be present in roughly equal concentrations, and those elements, in turn, were judged to be well blended.
These findings suggest that at least in 3T3 cells both splice variants were present in roughly equal proportions.
