Biology. A specimen or sample prepared for microscopic examination by spreading it on a slide; a smear (smear, n. 3b); spec. a squash (squash, n.1…

A small quantity of some substance prepared for microscopical investigation by being smeared upon a slide, esp. a sample of human or other cells…

Biology. A preparation of softened tissue that has been made thin for microscopic examination by pressing or tapping.

A sample which has been subjected to sonication, esp. to break down macromolecules or disrupt cell membranes. Cf. sonicate, v.

A sample of biological material from a homogeneous source which is preserved by freezing on a single occasion to serve as a standard, portions of it…