Previous techniques required much larger samples than are usually available.

Some schools require samples of the student's writing as well as a research proposal.

A test to determine paternity requires samples from both parties.

Areas devoted to very different kinds of plants - vegetables and lawn, for example - require separate samples.

Creation of such wavetables requires multiple samples, each with a different pitch.

Require smaller samples of blood: The lancet doesn't poke the skin as deeply.

Due to the long half-life of C, decay counting requires significantly larger samples.

His robbery conviction in 1989 did not require a DNA sample.

Earlier methods required large uncontaminated samples, but these were impossible to get because of damage from original conservation methods.

Traditional analyzers require test-tube-sized samples, meaning the small patients need frequent transfusions.