Examlex
Proteins that do not require antigen processing and presentation are referred to as ________.
Internal Validity
Relates to the extent to which a study can establish a cause-and-effect relationship between its variables, free from external influence.
External Validity
How broadly a study's conclusions can be extended to various scenarios and populations.
Artificial Atmosphere
A man-made environment that replicates the conditions of a natural atmosphere, often used in space exploration or controlled scientific experiments.
Laboratory Experiments
Controlled tests or investigations conducted in a lab setting where variables are closely controlled to explore scientific processes or effects.
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