sample

a blood sample

Large samples are generally more reliable than small samples due to having less variability.

Jeffrey conceives a fascination with nightclub singer Dorothy Vallens (Isabella Rossellini) who sings Blue Velvet, while her abusive, misogynist sugar-daddy Frank (Dennis Hopper) watches, caressing a sample of this same material.

Thus he concludes, and euery hardie knight / His ſample follow’d, and his brethren twaine, / The other Princes put on harneſſe light, / As footmen vſe.