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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
internal marker
Grammar usage guide and real-world examplesUSAGE SUMMARY
'internal marker' is correct and usable in written English.
You can use it to describe a reference point, reminder, or cue that is used to help someone remember something. For example, "Using internal markers as reminders helps me remember important dates more easily."
✓ Grammatically correct
Science
Science
Science
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
45 human-written examples
The region on the top-left has no corresponding internal marker.
After removing small regions and implementing region filling, the internal marker image is obtained.
Indigestible acid detergent fiber (iADF) was used as an internal marker to estimate apparent nutrient digestibility.
The binary internal marker image B in (x, y) is obtained by implementing region filling on B ′ x, y).
The apparent digestibility of DM and nutrients of experimental diets were estimated using the internal marker indigestible acid detergent fiber.
Science
Two internal marker regions are used for object B, since it tends to be detected as two parts by a CFAR detector.
Human-verified similar examples from authoritative sources
Similar Expressions
15 human-written examples
The target for the end of the term has been set by a series of internal markers, officially unacknowledged but verified through long observation.
News & Media
Since the internal markers perfectly correspond to the buildings, the external markers correctly surround every internal markers.
A59 is missed since no internal markers represent it.
Rule 1: a building should have corresponding internal markers.
For 3), apparently, they have no corresponding internal markers.
Expert writing Tips
Best practice
When using "internal marker" in scientific writing, clearly define what the marker is and why it is suitable for the intended measurement or analysis. This ensures clarity and reproducibility.
Common error
Avoid using "internal marker" when an external marker is more appropriate. An internal marker is inherent to the system, while an external marker is added. Using the wrong term can lead to misunderstanding and inaccurate results.
Source & Trust
80%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "internal marker" functions primarily as a noun phrase, often serving as a subject complement or object in sentences. As seen in Ludwig, it identifies a specific substance or characteristic used as a reference point within a system.
Frequent in
Science
96%
News & Media
2%
Formal & Business
2%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "internal marker" is a noun phrase commonly used in scientific and technical contexts to denote a reference point within a system, as confirmed by Ludwig. Predominantly found in scientific literature, it serves to define and identify specific substances or characteristics for measurement or comparison. Ludwig AI states that the usage is correct in written English. It's essential to differentiate "internal markers" from "external standards", ensuring accurate application in research. Examples from various sources highlight its role in fields ranging from animal feed science to signal processing, underscoring its versatility and importance in precise scientific communication. Remember to clearly define the "internal marker" when using it in your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
intrinsic indicator
Emphasizes that the marker is an inherent part of the system being observed, not externally added.
built-in reference point
Highlights the marker's function as a point of comparison or orientation that is already part of the system.
endogenous tracer
Focuses on the marker's role as a naturally occurring substance used to track processes within a system.
inherent benchmark
Highlights the marker's use as a standard for comparison that is intrinsically present.
internal standard
Focuses on the marker's role as a known quantity used for quantitative analysis within a system.
self-contained index
Emphasizes the marker's independence from external influences and its ability to provide information on its own.
native tracer
Focuses on the marker being naturally present in the system studied, as opposed to artificially introduced.
systemic indicator
Highlights the marker's relevance to the overall functioning of the system being analyzed.
integral measure
Stresses the marker's importance as a necessary component for assessing or understanding a system.
resident marker
Highlights the marker's permanent or long-term presence within the system.
FAQs
How is "internal marker" used in scientific research?
In scientific research, an "internal marker" is often used as a reference point or standard within a system to measure changes or processes. For example, in digestibility studies, indigestible acid detergent fiber can be used as an /s/internal+marker to estimate nutrient digestibility.
What's the difference between an "internal marker" and an /s/external+marker?
An "internal marker" is a substance or characteristic that is naturally present within a system or sample, used for comparison or measurement. An "external marker", on the other hand, is something added to the system or sample for the purpose of tracking or measurement.
What are some examples of substances used as an "internal marker"?
Examples of "internal markers" include indigestible acid detergent fiber (iADF) in animal feed studies, acid detergent lignin in dairy science, and GAPDH in molecular biology experiments. The choice of /s/internal+marker depends on the specific application and the system being studied.
How do you select a suitable "internal marker" for an experiment?
A suitable "internal marker" should be stable, consistently present, and easily measurable within the system under study. It should not interfere with the processes being investigated and should have well-defined properties. Additionally, its behavior should be well-understood to allow for accurate interpretation of results. It is also important to use the right /s/internal+standard, which depends on the experiment.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
80%
Authority and reliability
4.1/5
Expert rating
Real-world application tested