The phrase "agents were necessary to" is correct and usable in written English.
It can be used when discussing the requirement or role of agents in a particular context or situation.
Example: "In order to facilitate the negotiation process, agents were necessary to represent the interests of both parties."
Alternatives: "agents were essential for" or "agents were required to".
Mr. Liu says the — carefully picked — agents are necessary to help mostly smaller funds, including those run by women and minorities, that don't have the staff or expertise to win contracts on their own.
Because contrast agents can be directed toward either the extracellular or the intracellular spaces, knowledge of the different parenchymal enhancement alterations seen after the administration of these agents is necessary to understand how chronic liver disease pathologic changes influence contrast-enhanced magnetic resonance (MR) images.
Therefore, novel therapeutics agents are necessary to improve the survival associated with this disease.
The judicious use of antimicrobial agents is necessary to avoid providing a selective advantage for resistant organisms.
A detailed knowledge of the susceptibility to antimicrobial agents is necessary to facilitate the development of effective strategies to combat the growing problem of resistance.
4 However, MRI suffers from limited sensitivity 5 and the use of contrast agents is necessary to increase sensitivity and image contrast in MR scans.
Although in some cases the combination with chemotherapeutic agents is necessary to overcome TRAIL-resistance, first clinical trials show antitumour activity only with mild side effects [ 9].
The oral formulation of vinorelbine may render the regimen more convenient and feasible, and evaluation of new targeted agents is necessary to improve prognosis for this dismal disease.
This shows once more that, despite the studies in a rodent model, further research on the available agents is necessary to enable use of these agents without concerns in daily routine [ 64].
However, future clinical studies examining the effects of dietary nucleotides as single agents are necessary to better understand the role that nucleotides play in children with food allergy-related enteropathy as well as to demonstrate the expected clinical benefits.
