Protozoa
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  Protozoa



Protozoa

    Are microscopic animals that occur as single cells. Some protozoa can cause disease in humans. Protozoa form cysts, which are specialized cells like eggs that are very resistant to chlorine. Cysts can survive the disinfection process, then "hatch" into normal cells that can cause disease. Protozoa must be removed from drinking water by filtration, because they cannot be effectively killed by chlorine.

RELATED TERMS
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Protozoa
Are microscopic animals that occur as single cells. Some protozoa can cause disease in humans. Protozoa form cysts, which are specialized cells like eggs that are very resistant to chlorine. Cysts can survive the disinfection process, then "hatch" into normal cells that can cause disease. Protozoa must be removed from drinking water by filtration, because they cannot be effectively killed by chlorine.

Disease
Illness or sickness often characterized by typical patient problems (symptoms) and physical findings (signs). Disruption sequence: The events that occur when a fetus that is developing normally is subjected to a destructive agent such as the rubella (German measles) virus.

Cysts
Any closed cavity or sac, normal or abnormal, lined by epithelium, and especially one that contains a liquid or semisolid material. (Dorland, 27th ed)

Eggs
Animal reproductive bodies, or the contents thereof, used as food. The concept is differentiated from OVUM, the anatomic or physiologic entity.

Disinfection
Rendering pathogens harmless through the use of heat, antiseptics, antibacterial agents, etc.

Filtration
A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)



SIMILAR TERMS
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Protamine sulfate
Protamine sulfate is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): protamine sulfate.

Protamine zinc and iletin II
Protamine zinc and iletin II is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): insulin susp protamine zinc purified beef.

Protamine zinc and iletin II pork
Protamine zinc and iletin II pork is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): insulin susp protamine zinc purified pork.

Protamine zinc insulin
Protamine zinc insulin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): insulin susp protamine zinc purified beef.

Protamine, zinc and iletin I beef-pork
Protamine, zinc and iletin I beef-pork is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): insulin susp protamine zinc beef-pork.

Protein
Any of a group of complex organic compounds which contain carbon, hydrogen, oxygen, nitrogen, and usually sulfur, the characteristic element being nitrogen. Proteins, the principal constituents of the protoplasm of all cells, are of high molecular weight and consist essentially of combinations of a-amino acids in peptide linkages. Twenty different amino acids are commonly found in proteins, and each protein has a unique genetically defined amino acid sequence which determines its specific shape and function. Their roles include enzymatic catalysis, transport and storage, coordinated motion, nerve impulse generation and many others.

Proteinuria
Protein in the urine.

Proteoglycan
A major constituent of cartilage. Protein molecule with polysaccharide side-chains.

Proto-oncogenes
Fragments of genetic material (DNA), related to oncogenes, but are the normal "switches" used to control growth and tissue repair.

Protocol
An outline of care; a treatment plan.

Protocol amendment
A written description of a change(s) to or formal clarification of a protocol.

Proton pump inhibitors
Medicines that stop the stomach's acid pump.

Protonix
Protonix is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): pantoprazole sodium.

Protonix iv
Protonix iv is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): pantoprazole sodium.

Protopam chloride
Protopam chloride is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): pralidoxime chloride.

Protopic
Protopic is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): tacrolimus.

Protostat
Protostat is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): metronidazole.

Protropin
Protropin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): somatrem.



PREVIOUS AND NEXT TERMS
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Plasma
The watery, liquid part of the blood in which the red blood cells, the white blood cells, and platelets are suspended.

Platelet
Small, irregularly-shaped bodies in the blood that contain granules. These cells are important components of the blood coagulation (clotting) system.

Palpitation
Pulsation of the heart, usually with an increase in force or frequency of the heartbeat.

Protozoa

Pancreas
A large, elongated gland located behind the lower portion of the stomach that secretes the hormones insulin and glucagon into the blood. These hormones are essential in regulating blood sugar levels. The pancreas also secretes enzymes into the small intestine that help with digestion and neutralize acid from the stomach.

Prokaryote
Prokaryotes are unicellular (in rare cases, multicellular) organisms without a nucleus. The name prokaryote comes from the Greek pros meaning before and karyon meaning nut, referring to the nucleus. This is in contrast to eukaryotes, organisms that have cell nuclei and may be variously unicellular or multicellular. The difference between the structure of prokaryotes and eukaryotes is so great that it is considered to be the most important distinction among groups of organisms.

Protein
Any of a group of complex organic compounds which contain carbon, hydrogen, oxygen, nitrogen, and usually sulfur, the characteristic element being nitrogen. Proteins, the principal constituents of the protoplasm of all cells, are of high molecular weight and consist essentially of combinations of a-amino acids in peptide linkages. Twenty different amino acids are commonly found in proteins, and each protein has a unique genetically defined amino acid sequence which determines its specific shape and function. Their roles include enzymatic catalysis, transport and storage, coordinated motion, nerve impulse generation and many others.

Puberty
A sequence of events by which a child becomes a young adult; characterized by secretions of hormones, development of secondary sexual characteristics, reproductive functions, and growth spurts.

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