The phrase "agent penetration" is correct and usable in written English.
It can be used in contexts related to espionage, intelligence, or certain fields of science, such as chemistry or biology, where it refers to the process of an agent infiltrating or entering a system.
Example: "The report detailed the methods of agent penetration used to gather sensitive information from the target organization."
Alternatives: "agent infiltration" or "agent incursion".
Its uses encompass cells, tissue and organ preservation as well as enhancement of pharmaceutical agent penetration.
Necrotic tissue resulting from disease progression may require repeated excision as it prevents antifungal agent penetration [ 45].
Fluorescein (lipophilic fluorescence substance) was used to monitor and quantify liposome lipophilic active agent penetration through different layers of whole human abdomen skin.
In C. albicans biofilms, the ECM can prevent antifungal agent penetration into the innermost biofilm layers [ 20], acting as a physical barrier to protect cells embedded in the biofilm community from the access of antimicrobial agents, thus increasing biofilm drug resistance.
Despite encouraging preclinical data, including almost complete growth inhibition in an orthotopic glioma model, a favorable pharmacokinetic profile of a lipophylic agent with penetration across the blood brain barrier and tolerable toxicity allowing for delivery of adequate doses [ 12– 16] 16], we could not detect any evidence of relevant clinical antitumor activity in recurrent glioblastoma.
Furthermore, glioblastoma models proved to be sensitive to these agents, suggesting penetration of the BBB.
This could be attributed to the long-term systemic remission that is achieved by chemotherapeutic agents without penetration through the blood-brain barrier [ 6].
Dye tracer experiments with methylene blue as tracer agent yielded a penetration depth of 120 cm on the conservation tillage plot while a penetration depth of only 50 cm was recorded on the conventionally tilled plot.
Some in the F.B.I. thought she might be an agent, "a hostile penetration attempt".
Astonishingly, Elliott never discovered that Philby had married an Austrian communist spy, or that his friend was a "penetration agent" for the KGB.
The editors of the Oxford English Dictionary, he says, wrote him once, asking if he invented the idea of employing the word as a synonym for a long-term penetration agent.
