Here Darwin replaced Le Sage's cage-like units of ordinary matter with microscopic hard spheres of uniform size.

Glass microspheres are microscopic spheres of glass manufactured for a wide variety of uses in research, medicine, consumer goods and various industries.

Perspiration causes microscopic spheres, minicapsules containing fragrance oil, to burst, putting fragrance on the skin.

The researchers encased marker genes in liposomes - microscopic man-made spheres of fatty material.

Calhoun doggedly waited for him to react to the microscopic spheres.

Then he saw the spherical, pigmented microscopic spheres he was looking for.

Liposomes are microscopic man-made spheres composed of fat globules known as lipids.

The embryo, known at this stage as a blastocyst, is a microscopic hollow sphere holding a mass of about 200 cells.

Expandable microspheres are microscopic spheres comprising a thermoplastic shell encapsulating a low boiling point liquid hydrocarbon.

Sandwiched between layers of plastic film are millions of transparent, nearly microscopic liquid-filled spheres.