(n.) The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.
(n.) The act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc., through the body. Unlike absorption, diffusion may go on after death, that is, after the blood ceases to circulate.
Example Sentences:
(1) The Na+ ionophore, gramicidin, had a small but significant inhibitory effect on Na(+)-dependent KG uptake, demonstrating that KG uptake was not the result of an intravesicular positive Na+ diffusion potential.
(2) The femoral component, made of Tivanium with titanium mesh attached to it by a new process called diffusion bonding, retains superalloy fatigue strength characteristics.
(3) The diffusion of Myocamicin in the prostatic tissue of patients undergoing prostatectomy after a single oral dose of 600 mg has been studied.
(4) The preembedding method also disclosed diffuse cytosolic immunoreactivity.
(5) The clinical aspects, the modality of onset and diffusion of the lymphoma, its macroscopic and histopathological features and the different therapeutic approaches are discussed.
(6) The kidney disease was characterized by diffuse beaded deposition of rat gammaglobulin along the glomerular capillaries and proteinuria.
(7) We identified four distinct clinical patterns in the 244 patients with true positive MAI infections: (a) pulmonary nodules ("tuberculomas") indistinguishable from pulmonary neoplasms (78 patients); (b) chronic bronchitis or bronchiectasis with sputum repeatedly positive for MAI or granulomas on biopsy (58 patients, virtually all older white women); (c) cavitary lung disease and scattered pulmonary nodules mimicking M. tuberculosis infection (12 patients); (d) diffuse pulmonary infiltrations in immunocompromised hosts, primarily patients with AIDS (96 patients).
(8) Sera from three of these patients gave a precipitin band in gel diffusion tests identical to that produced by a monospecific rabbit anti-E. granulosus antigen 5 serum, when tested against whole hydatid fluid.
(9) A constellation of histologic lesions was identified in brain (diffuse meningoencephalitis with bilaterally symmetrical thalamic necrosis), liver (pericholangiohepatitis), lung (pneumonitis), and spleen (lymphoid hyperplasia); this tetrad is apparently unique to this model system.
(10) Diffuse Ga-67 uptake in the kidneys was seen due to renal involvement with this disorder.
(11) Thus, whereas CD3-associated molecules isolated from polyclonal CD3+WT31+ populations (expanded in IL 2 under the same culture conditions) appeared as diffuse bands, CD3-associated molecules isolated from CD3+WT31- populations displayed a homogeneous molecular mass.
(12) The diffuse reaction product seen in basement membranes of ganglion and nerve may also be artifact.
(13) Here we determine the position of bound ADP diffused into the recA crystal.
(14) In contrast, boundary layer diffusion is operative in the release from the matrixes prepared by compression of physical mixtures.
(15) Medium molecules have been detected by two methods, gel filtration and screening technique, in patients with diffuse purulent peritonitis and with chronic renal insufficiency.
(16) This may be because the epithelium restricts diffusion of the drug or due to the production of a non-prostanoid factor which inhibits smooth muscle responsiveness.
(17) Ten of 11 diffuse poorly differentiated lymphocytic lymphomas were composed of cells with large amounts of surface immunoglobulin, whereas only 1 of 5 diffuse well differentiated lymphocytic tumors contained such abundant surface immunoglobulin.
(18) Thirty-six lesions imaged as vascular malformations with abnormal vessels or diffusely increased activity.
(19) We therefore conclude that the protective effect displayed by solid grafts might be a local process dependent on the release of diffusible trophic agents.
(20) These results demonstrate, in living human hearts, that diffuse coronary atherosclerosis is often present when coronary angiography reveals only discrete stenoses.
Penetration
Definition:
(n.) The act or process of penetrating, piercing, or entering; also, the act of mentally penetrating into, or comprehending, anything difficult.
(n.) Acuteness; insight; sharp discoverment; sagacity; as, a person of singular penetration.
Example Sentences:
(1) The penetration of (22)Na was not prevented by the presence of metabolic inhibitors or by 500 mm NaCl in the suspending medium.
(2) Content of cyclic nucleoside monophosphates was decreased in all the eye tissues in experimental toxico-allergic uveitis as well as penetration of cAMP into the fluid of anterior chamber of the eye.
(3) After four years of existence, many evaluations were able to show the qualities of this system regarding root canal penetration, cleaning and shaping.
(4) testosterone, fentanyl, nicotine) may ultimately be administered in this way, important questions pertaining to pharmacology (tolerance), toxicity (irritation, sensitisation) and dose sufficiency (penetration enhancement) remain.
(5) The automatic half of both the motor which advances the trepan as well as the second motor which rotates the trepan is triggered by the sudden change in electrical resistance between the trepan and the patient's internal body fluid, at the final stage of penetration.
(6) Thus, although ferric-enterochelin cannot penetrate the cell surface from outside, the complex that is formed within the envelope is transported normally into the cell.
(7) Major limitations of the conventional sperm penetration assay are the inability to assess several aspects of sperm function (zona binding and penetration) and the absence of human ovulatory products known to influence fertilization.
(8) The cercaria, microcercous in type, is liberated and actively penetrates a second terrestrial pulmonate where development to the free metacercarial stage takes place in the pericardial cavity.
(9) The incomplete penetrance of the neoplastic phenotype and the monoclonality of lymphoid tumors suggest that tumor formation in v-fps mice requires genetic or epigenetic events in addition to expression of the P130gag-fps protein-tyrosine kinase.
(10) All of these factors make morbidity and mortality associated with penetrating injuries low.
(11) The treatment led to decreased spinnbarkeit, arborization and sperum penetration in the cervical mucus.
(12) The penetration coefficient, determined by the surface tension, contact angle and viscosity, is a measure of the ability of a liquid to penetrate into a capillary space, such as interproximal regions, gingival pockets and pores.
(13) The rational surgical methods of treatment in 85 patients with suppurative hepatic echinococcosis penetrating into the abdomen cavity are presented.
(14) This apparent lack of centrosomal staining was not due to problems associated with penetration of the antibody probes, since staining adjacent to and within the centriolar cylinder was observed when phosphoprotein antigens recognized by the MPM-2 antibody were localized.
(15) Both types of oral cleft, cleft palate (CP) and cleft lip with or without CP (CLP), segregate in these families together with lower lip pits or fistulae in an autosomal dominant mode with high penetrance estimated to be K = .89 and .99 by different methods.
(16) Cefuzoname seems to be among the middle ranks of beta-lactam agents as far as penetration rate is concerned; however, when its potent antibacterial activity and broad spectrum are taken into account, the concentrations in CSF in patients with meningitis seem worth examining.
(17) The time of sperm penetration in the mouse eggs, however, was delayed for one-half to one hour when ejaculated sperm were used.
(18) Enzymatic lability does not, however, play as important a role as lipophilicity in the corneal and conjunctival penetration of cycloalkyl and aryl ester prodrugs.
(19) No infection threads were found to penetrate either root hairs or the nodule cells.
(20) Kinetic studies showed that significant inhibition of virus production occurred when the inhibitor was added to infected cultures up to 5 h after virus penetration.