(n.) A rhizopod. common in fresh water, capable of undergoing many changes of form at will. See Rhizopoda.
Example Sentences:
(1) An unprincipled coward with the backbone of an amoeba."
(2) Developing D. discoideum amoebae synthesize and secrete cAMP following the binding of cAMP to their surface cAMP receptor, a response called cAMP signaling.
(3) The relative amount of the crystals was measured in both amoeba strains on the basis of the integral extinction value.
(4) In amoeba cells the enzyme, like exo N-acetylglucosaminidase and acid phosphatase, is attached to the lysosomes, as it is sedimentable when homogenates are prepared in medium containing sucrose.
(5) Recent reports incriminating Acanthamoeba, a small free-living amoeba, wide-spread in environmental soils and waters, in acanthamoebic keratitis cases wearing soft contact lenses, drew attention to cleaning solutions for contact lenses.
(6) The amoeba, however, could not use yeasts, molds, or a green alga as a nutritional source.
(7) The drinking water was tested in chemical and bacteriological respects as well as on amoebas and rotaviruses.
(8) A new amoeba, isolated from well water in Gambia, West Africa, is described and named Phreatamoeba balamuthi n. g., n. sp.
(9) It was found that the uptake of this cation by the amoebae was fast in both species, conditions that modify the membrane potential (hyperpolarization and depolarization) produced changes in the fluorescence of the dye in agreement with its reported capability to detect variations in membrane potential.
(10) Alcian blue and Na+, both inducers of pinocytosis, differ in the manner with which they associate with the amoeba surface, suggesting the possibility of different pinocytosis-inducing sites on the amoeba surface.
(11) PHA-stimulated T-lymphocytes, depleted of T8-bearing cells by complement-mediated lysis, were unable to kill amoebae.
(12) Results show that the 3-D disc is mostly preceded by impressions of elastic amoeba-like deformations, whereas the 3-D egg is mostly preceded by the percept of a rotating flat ellipse.
(13) In contrast, incorporation by amoebae starving in suspension culture continued for 6-8 h. Similar patterns of [35S]sulphate incorporation were observed for two other strains of D. discoideum (strains AX2 and NC4) and for Polysphondylium violaceum.
(14) Focal contact sites are left behind on the glass surface ('footprints') when the amoeba moves away.
(15) Treatment during starvation of D. discoideum amoebae with micromolar amounts of A23187 causes an enhanced aggregation.
(16) Many trophozoite-target interfaces were outlined with a ring of polymerized amoeba actin, revealed by rhodamine-phalloidin staining of glutaraldehyde-fixed and Triton-X 100-extracted cells.
(17) Similar treatment of nonpathogenic amoebae had no effect on susceptibility to complement.
(18) An extracellular cyclic nucleotide phosphodiesterase was isolated from either growing cultures or aggregating amoebas of Dictyostelium discoideum.
(19) The establishment of amoebae leading to acute liver abscess was accompanied by significantly reduced levels of antibodies to the plasma membrane (PM) protein of E. histolytica, reduced direct macrophage cytotoxicity, and reduced anti-PM antibody-mediated macrophage-dependent cytotoxicity to amoebic trophozoites.
(20) When developing cultures of Dictyostelium discoideum are disaggregated at any time prior to cell wall formation and challenged to reinitiate development, amoebae will progress through the original sequence of morphogenetic stages, but the second time through they will do so in roughly one-tenth the original time, a process known as 'rapid recapitulation'.
Protean
Definition:
(a.) Of or pertaining to Proteus; characteristic of Proteus.
(a.) Exceedingly variable; readily assuming different shapes or forms; as, an amoeba is a protean animalcule.
Example Sentences:
(1) Such a need has occurred in New York City, where schistosomiasis, with its protean manifestations has been seen with increasing frequency.
(2) Sarcoidosis is a disease of unknown etiology with protean manifestations.
(3) Cow's milk protein intolerance (CMPI) is recognised as an important cause of protean symptoms in infants.
(4) The symptoms are protean from unilateral headache, Horners syndrome, tinnitus, to cerebral ischemia and hemipareses.
(5) The protean clinical manifestation depends on the site and the extent of the disease and its complications.
(6) Lyme borreliosis is a protean infection caused by B burgdorferi, a recently recognized arthropod-borne spirochete.
(7) The fossil fuel resistance, like the fossil fuel industry, is protean and sprawling – and each win reverberates for decades to come, because that’s how long pipelines and coal mines are built to last.
(8) Congenital intrapericardial aneurysm of the left atrial wall is a rare anomaly with protean manifestations.
(9) It was important for the physician to have a high index of suspicion based on a protean chief complaint, a lack of preceding history of illness, the time of presentation to the ED, and more subtle physical findings such as minor skin bruising, retinal hemorrhage, and distended abdomen.
(10) Amongst the protean extra-intestinal manifestations of inflammatory bowel disease, scant mention is made of muscle involvement.
(11) This adds another entity to the already protean manifestations of M. pneumoniae infection.
(12) The signs and symptoms of the syndrome are protean, and the underlying cancer is often occult.
(13) Widespread drug abuse, a comparatively recent medicosocial phenomenon, presents protean clinical patterns and challenging diagnostic problems daily that mimic classical medical syndromes.
(14) The infants all had multiple skin haemangiomas as well as deep-seated lesions in many different tissues that caused protean clinical manifestations and management problems.
(15) The latter has protean manifestations, but bouts of fever with low parasitaemia and blood disorders are predominant.
(16) Only the subsequent course of the tumor enabled us to identify the site in the sphenoid sinus, an atypical area surrounded by numerous neurovascular structures which, if involved, may give rise to a protean and nonspecific symptom-complex.
(17) While qualitatively normal, these precursors accumulate to cause protean signs and symptoms.
(18) Symptomatology was protean, clinical findings minimal, relapses frequent, and results of laboratory investigations, including virological studies, were generally negative.
(19) Both clinicians and pathologists must be aware of the protean manifestations of AIDS in order to establish an accurate and complete diagnosis.
(20) Although the hallmark of Mycoplasma pneumoniae infection is pneumonia, the organism is also responsible for a protean array of other symptoms.