n.

an example regarded as typical of its class

a bit of tissue or blood or urine that is taken for diagnostic purposes

"they collected a urine specimen for urinalysis"

The quantitative analysis of thin specimens
Cryoelectron Microscopy of Vitrified Specimens
Identification of single specimens of the Anopheles gambiae complex by the polymerase chain reaction
Cryo-electron microscopy of vitrified specimens: An approach to the study of bulk specimens
Simplified, accurate method for antibiotic assay of clinical specimens.
Tissue microarrays for high-throughput molecular profiling of tumor specimens
Extending the methodology of X-ray crystallography to non-crystalline specimens
Rapid detection of enterovirus RNA in cerebrospinal fluid specimens with a novel single-tube real-time reverse transcription-PCR ass...
Assessing the requirement for the 6-hour interval between specimens in the American Heart Association Classification of Myocardial I...
Histopathological features of diagnostic and clinical relevance in autoimmune pancreatitis: a study on 53 resection specimens and 9 ...