| Health / Medical Topics |
Missing Study Animal
An indication that the test system (animal) could not be found, in which case, its disposition was not known, and no postmortem data was available. (NCI Thesaurus)
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Not existing; not able to be found.
A point mutation in a coding DNA sequence that causes a base change which results in an amino acid change in the…
A point mutation occurring within the protein-coding region of a gene, and which codes for a different amino acid than expected. …
The text and/or code that describes the rationale behind why an activity is not done.
The absence of a menstrual period based on the expected start date of the menstrual cycle.
Specifies whether a planned or preestablished event or activity did not occur.
