The phrase "a natural agent" is correct and usable in written English.
It can be used in contexts discussing entities or forces that act in a natural manner, often in scientific or philosophical discussions.
Example: "In ecological studies, a natural agent such as water can significantly influence the distribution of plant species."
Alternatives: "a natural force" or "a natural entity".
Runners are specialized aerial stems, a natural agent of increase and spread for such plants as the strawberry, strawberry geranium, and bugleweed (Ajuga).
In this study, we tested whether a natural agent, ursolic acid, was able to enhance the efficacy of oxaliplatin for CRC.
Although wildfire is a natural agent of disturbance over most of the forest landscape of Canada, it is managed when human life, settlements, and infrastructure are at risk.
He holds that knowledge propter quid must be through angles, lines and figures because a "natural agent multiplies its power from itself to what it acts upon, whether it act upon the senses or upon matter" (Baur 1912, 60).
Our data suggest that RM can be used as a natural agent to control obesity and associated type 2 diabetes.
When monotherapy or combined therapy based on conventional drugs is unsuccessful, then combined treatment including a natural agent may be more effective.
Yet, despite Darwin (1859) pointing out that reference to "the plan of creation" or "unity of design" revealed our ignorance rather than provided an explanation, a natural, agent-less cause like natural selection is difficult for most Americans to understand.
This study suggested that SPAP was a suitable natural agent and may be applied in therapy.
Ongoing research for the last few decades have shown that tea and its polyphenolic constituents can bring about many protective biological activities including antimutagenic and anticancer activities and consequently, tea appears to be a good natural agent for chemoprevention.
Therefore, CLF1 isolated from C. leprosum may constitute an important natural agent for the development of new therapies for caries and other infectious diseases caused by S. mutans and S. mitis.
Hence, we believe that SB715992 could be a novel agent for the treatment of prostate cancer with greater success when combined with a non-toxic natural agent like genistein.
