The phrase "a specimen that was" is correct and usable in written English.
It can be used when referring to a specific example or instance of something that has been identified or examined in a particular context.
Example: "The researcher presented a specimen that was collected from the remote area during the expedition."
Alternatives: "an example that was" or "a sample that was".
Compound 7j was the most potent compound in the series in the M9-ENL1 AML cell assay with a lethal dose concentration EC50 value of 720 nM, and exhibited the greatest cytotoxicity against a collection of primary AML stem cell specimens, which included a specimen that was unresponsive to PTL, affording EC50 values in the range 0.33 1.0 μM in three out of four specimens.
Apart from frozen remains, the only soft tissue known is from a specimen that was preserved in a petroleum seep in Starunia, Poland.
The species was first identified and named by the French naturalist Georges Cuvier in 1829 after receiving a specimen that was listed as having been collected in the "Southern seas".
Very recently, Lister et al. [30], reported that the combination of PTB and a commercial DNA purification kit yielded results superior to previous methods and was successfully applied to amplify a 350 bp fragment from an a specimen that was over a 100 years old.
A confirmed case of pandemic (H1N1) 2009 was defined as a person who had a specimen that was PCR positive for pandemic (H1N1) 2009 virus.
In this section, a segmentation algorithm is developed using the relative attenuation coefficients measured in Section 3. The algorithm was validated on a specimen that was not included in the set used to measure the coefficients.
The methods' ability to damage detection is compared using a specimen that is subjected to large temperature changes.
The perfect white shirt is something of a holy grail for fashion followers – untold time has been spent in pursuit of a specimen that is not too stiff and starchy, but doesn't err across the line into blousey territory.
Just a few months ago, the museum even put on permanent display the skeleton of Sophie the Stegosaurus, a crown jewel of a specimen that is by far the best preserved and most complete fossil of this famous plate-backed dinosaur ever found.
A key feature of the specimen is that it has tiny feet, human-sized, in a specimen that is about 50 feet long.
Birnbaum and Saunders (1969a) derived a lifetime distribution, known as the Birnbaum-Saunders distribution (abbreviated as B-S hereafter), which is founded on modeling the failure of a specimen that is subjected to a cyclic pattern stresses and strains.
