Most references to " amoebas " or " amoebae " are to amoeboids in general rather than to the specific genus Amoeba.

The shells of amoebas are often composed of calcium.

As amoebas themselves are polyphyletic and subject to some imprecision in definition, the term " amoeboid " does not provide identification of an organism, and is better understood as description of locomotion.

Phylogenetic analyses place these genera into the following groups ( not all of these are considered amoeboid ( or " amoebas ") by all sources ):

When the amoebas inside the bowel of an infected person are ready to leave the body, they group together and form a shell that surrounds and protects them.

The amoebas inside the cyst are protected from the stomach's digestive acid.

Dr. Thomas Dean Pollard applied this model at the NIH, Harvard Medical School, Johns Hopkins University School of Medicine, and the Salk Institute for Biological Studies to discover and characterize many proteins that are essential for cell motility, not only in amoebas, but also in many other eukaryotic cells, especially those of the human nervous and immune systems, the developing embryo, and cancer cells.

Though they are a higher form of multi-cellular life and are approximately as intelligent as human beings, Dralasite have some similarities to amoebas in that they have no bones or hard body parts.

Buds are immobile, but are actively carried by special mobile cells, called phorocytes-" carrier cells ", shaped like amoebas.

Chaos and its close relative, Amoeba, are now placed in the latter, within the order Tubulinida: naked amoebas ( lacking a test, or shell ), either monopodial or possessing somewhat cylindrical pseudopods, with non-adhesive uroid ( a region at the posterior of the cell which has a crumpled appearance ).

From the stomach, the cyst will travel to the intestines where it will break open and release the amoebas, causing the infection.

The amoebas that cause dysentery can also be sexually transmitted during mouth-to-anus contact.

Instead The Far Side used a wide variety of characters including humans, monsters, aliens, chickens, cows, worms, amoebas and more.

For a time during the first half of the 20th century the entire genus Entamoeba was transferred to Endamoeba, a genus of amoebas infecting invertebrates about which little is known.

Amongst many other living organisms, some gigantic single-celled amoebas with a size of more than 4 inches ( 10 centimeters ), belonging to the class of xenophyophores were observed.

This is how amoebas move, as well as some cells found in animals, such as white blood cells.

This group of amoebas is known as a cyst.

These giant protozoans seem to feed in a manner similar to amoebas, enveloping food items with a foot-like structure called a pseudopodium.

In 1966, Fowler termed the infection resulting from N. fowleri primary amoebic meningoencephalitis ( PAM ) to distinguish this central nervous system ( CNS ) invasion from other secondary invasions caused by other true amoebas such as Entamoeba histolytica.

Earthworms, amoebas, molds, and other organisms in the surrounding ground soils and flying insects entering the privy hole also consume nutrients in the waste material, slowly decomposing the wastes and forming a compost pile in the base of the pit.

; Tslek: The " Blobs ", they resemble giant amoebas, although they must have a more complex internal structure.

But it is characteristic of him, we are told, `` his little artifice '', to be able to introduce `` into a fairly vulgar and humorous piece of hackwork a sudden phrase of genuine creative art ''.

Among measures in anticipation of crisis are plans to inject into the turmoil as assistants of key decision makers qualified persons who are cognizant of the corrosive effect of crisis upon personal relationships and are also able to raise calm and realistic voices when overburdened leaders near the limit of self-control.

But if you are able & care to come, you know how glad I shall be.

They enlisted the help of the New Jersey congressman, who has been able to trace the letters to the national archives, where they are available on microfilm.

There are other countries where, with skillful diplomacy, we may be able by our aid to give encouragement to those groups in government which would like to press forward with economic and social reform measures to promote growth.

Sometimes those who know about them are too far down the line to be able to do anything about them.

and lawyers -- with the great virtues that they are trained to read `` the fine print '' carefully and are able out of professional experience to arrive at imaginative solutions to difficult problems in many fields -- are indispensable even in a foundation office.

Over a relatively short period of time, usually about four to twelve weeks, the worker must be able to shift the focus, back and forth, between immediate external stressful exigencies ( `` precipitating stress '' ) and the key, emotionally relevant issues ( `` underlying problem '' ) which are, often in a dramatic preconscious breakthrough, reactivated by the crisis situation, and hence once again amenable to resolution.

Neither can be adequately systematized until we are able to separate the two and assign the observed phenomena individually to one or the other.

Unemployed older workers who have no expectation of securing employment in the occupation in which they are skilled should be able to secure counseling and retraining in an occupation with a future.

When strong hands buy, they are able to buy more, and they do it even in the face of bearish news reports.

They are able to sit more patiently with what they have bought.

In a general way, psychiatrists were able to establish on a wide basis what many of them had always felt -- that the most telling cues in psychotherapy are acoustic, that such things as stress and nagging are transmitted by sound alone and not necessarily by words.

People who have not been able to get relief from regular medical doctors are especially apt to be taken in by quacks ''.

This is the story of his last tragic voyage, as nearly as we are able -- or ever, probably, will be able -- to determine:

Private business is more effective than government aid, he explained, because individuals are able to work with the people themselves.

Black said COAHR `` hoped to be able to integrate the theaters without taking direct action, but we are pledged to using every legal and nonviolent means at our disposal ''

Often they are able to get in only because the area is declining economically.

Though no longer able to turn out his protoplasmic pen-and-ink sketches ( several old favorites are scattered through the present volume ) Thurber has retained unimpaired his vision of humor as a thing of simple, unaffected humanness.

This accompanied or facilitated other important evolutionary developments: the bilaterian body plan ; the coelom, an internal cavity that provided space for a circulatory system and, in some animals, formed a hydrostatic skeleton which enables worm-like animals to burrow ; metamerism, in which the body was built of repeated " modules " which could later specialize, for example the heads of most arthropods are composed of fused, specialized segments.

Dachshunds are burrowers by nature and are likely to burrow in blankets and other items around the house, when bored or tired.

The first among other civilizations to invent complex machines, the ancient Chinese creations of the wheel burrow, the blast furnace, the grooves all are the evidence of Chinese scientists ' familiarity with the basics laws of physics.

Hamsters are crepuscular animals which burrow underground in the daylight to avoid being caught by predators.

Little Penguins live year-round in large colonies, with each individual breeding pair forming a burrow in which to raise their chicks ( of which two are born at a time, usually about 2 days apart ).

They are then weaned and begin to surface from the burrow.

While out of the burrow, the rabbit will occasionally reingest its soft, partially digested pellets ; this is rarely observed, since the pellets are reingested as they are produced.

These are only released outside the burrow and are not reingested.

The burrow tracks are often linear, to the point that a neat " line " of four or more closely placed and equally developed mosquito-like " bites " is almost diagnostic of the disease.

If the person is infected with scabies, the characteristic zigzag or S pattern of the burrow will appear across the skin ; however, interpreting this test may be difficult, as the burrows are scarce and may be obscured by scratch marks.

Since crayfish are accustomed to being in ponds or rivers, they will have a tendency to shift gravel around on the bottom of the tank, creating mounds or trenches to emulate a burrow.

Young hares are adapted to the lack of physical protection, relative to that afforded by a burrow, by being born fully furred and with eyes open.

Wombats use their rodent-like front teeth and powerful claws to dig extensive burrow systems ; they are mainly crepuscular and nocturnal.

Moles burrow lawns, raising molehills, and killing the lawn, for which they are sometimes considered pests.

Devices are also sold to trap the mole in its burrow, when one sees the " mole hill " moving and therefore knows where the animal is, and then stabbing it.

In the ringing studies birds ringed as chicks are recapatured close to their original nests, a tendency which can be extreme at times ; in Laysan Albatross the average distance between hatching site and the site where a bird established its own territory was, and a study of Cory's Shearwaters nesting near Corsica found that of nine out of 61 male chicks that returned to breed at their natal colony actually bred in the burrow they were raised in.

The word can also be used in a more limited sense, to mean bivalves that burrow in sediment, as opposed to ones that attach themselves to the substrate ( for example oysters and mussels ), or ones that can swim and are migratory, like scallops.

Rats are known to burrow extensively, both in the wild and in captivity, if given access to a suitable substrate.

Lungfishes do the same when they are living in water, making ammonia and no urea, but when the water dries up and they are forced to burrow down in the mud, they switch to urea production.

Their requirements are a simply an elevated perch from which to watch for prey and a ground substrate in which to dig their breeding burrow.