proto-, prot-

1. The original form of something, which has the essential features and is the model for subsequent forms.
2. A first full-size functional model to be manufactured; such as, a car or a machine: "The newspaper had an article stating that a prototype of the newest solar-powered car will be on display next week."
3. A standard example of a particular kind, class, or group of something.
4. In biology, a primitive form believed to be the original type of a species or group, exhibiting the essential features of the later type.

The subkingdom which comprises all unicellular animals (by some regarded as non-cellular).

Included in the group are some which may also be classified as plants, the distinction being that these possess chlorophyll.

The killing of protozoans.

Any of a diverse group of eukaryotes, of the kingdom Protista, that are primarily unicellular, existing singly or aggregating into colonies, are usually nonphotosynthetic, and are often classified further into phyla according to their capacity for and means of motility, as by pseudopods, flagella, or cilia.

1. Of or pertaining to the Protozoa.
2. In geology, containing the remains of the earliest discovered life of the globe, which included mollusks, radiates, and protozoans.

Radiates are fibers of the articular capsule (sac enclosing a joint) that radiate from the costal cartilages to the anterior surface of the sternum.

The branch of zoology dealing with protozoa.

A cell that has a phagocytic action on protozoa; that is, the ingestive action of phagocytes that are specialized cells that ingest and usually destroy foreign particulate matter or microorganisms.

This word applies to a term called malariotherapy which was used between 1917-1950 for the treatment of syphilis.

In 1917, J.W. von Jauregg began inoculating paretics with blood from patients with benign tertian malaria caused by Plasmodium vivax. The elevated temperature of the body caused by the malaria parasite killed the temperature sensitive Treponema pallidum.

Institutions for malariotherapy rapidly proliferated throughout Europe and the technique was also adopted in several centers in the U.S.A. In this way, thousands of syphilitics were saved from a sure and agonizing death.

Any glycoprotein containing sialic acid.

A glycoprotein is a molecule that consists of a carbohydrate plus a protein. Glycoproteins play essential roles in the body; for example, in the immune system almost all of the key molecules involved in the immune response are glycoproteins.

Any protein that also functions as an enzyme.