In this process, the particle to be studied is exposed to electron beams under a high-resolution microscope called a transmission electron microscope and the micrographs or images captured are ...

A clean catch urine sample or specimen is one of the least invasive procedures for a urine culture or urinalysis. The clean catch method aims to prevent bacteria from the skin of the penis or vagina ...

Jocelyn P. Colella works for and volunteers with natural history museums, and regularly receives funding for this work. Bryan McLean works extensively with natural history specimens, and regularly ...

A type, or type specimen, is the specimen that represents an entire species of animal, plant, fungi or other organism. Find out about the different kinds of type specimens, why they are important and ...