(v. t.) To enter into; to make way into the interior of; to effect an entrance into; to pierce; as, light penetrates darkness.
(v. t.) To affect profoundly through the senses or feelings; to touch with feeling; to make sensible; to move deeply; as, to penetrate one's heart with pity.
(v. t.) To pierce into by the mind; to arrive at the inner contents or meaning of, as of a mysterious or difficult subject; to comprehend; to understand.
(v. i.) To pass; to make way; to pierce. Also used figuratively.
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.
Puncture
Definition:
(n.) The act of puncturing; perforating with something pointed.
(n.) A small hole made by a point; a slight wound, bite, or sting; as, the puncture of a nail, needle, or pin.
(v. t.) To pierce with a small, pointed instrument, or the like; to prick; to make a puncture in; as, to puncture the skin.
Example Sentences:
(1) A simple method of selective catheterization of the superficial femoral artery (SFA) following antegrade puncture of the common femoral artery is described.
(2) Transthoracic puncture for peripheral pulmonary lesions not diagnosed by fibroscopy were performed on 70 patients under computed tomographic (CT) control.
(3) Thirty-seven patients with retinoblastoma were evaluated prospectively by clinical examination, lumbar puncture, and CT.
(4) The subjects underwent a lumbar puncture and three nights of polysomnography.
(5) In one of them, who sustained a complete membranous disruption 5 weeks ago, transluminal puncture failed because of the movable proximal urethra.
(6) Nine among 21 patients (42%) who were initially treated by percutaneous puncture were definitively cured: all pseudocysts were smaller than 55 mm.
(7) The hemodynamic measurements and mitral valve area calculations were performed with and without balloon occlusion of the atrial septal puncture site.
(8) A specific central vein catheter for puncture of the brachiocephalic vein has been developed which is provided with a valve by which air-embolism and unwanted bleeding from the catheter are eliminated.
(9) The excellent comparability of paired platelet counts, at variance to that found in some previous studies, indicates that skin puncture blood can be used for platelet estimation providing an appropriate counting method is used.
(10) A case of epidermoid tumor of the sacral area with S3 root irritation resulting in bladder dysfunction is presented and its possible relationship to spinal puncture is discussed.
(11) At the end of the study, blood was collected by cardiac puncture.
(12) Transthoracic puncture is the most effective and common diagnostic method.
(13) The authors wrote about the technics particularly of the percutaneous puncture or drainage.
(14) Consequently the puncture site becomes small (a balloon-catheter may be introduced through a 16 G catheter needle) allowing punctures proximal to lesions (e.g.
(15) 29 punctures were practiced on 19 patients, 9 women and 10 men of ages comprised between 34 and 94 years, with lesions in different organs of the abdominal cavity diagnosed by ultrasonography with real time equipment and lineal 3.5 and 5 MHz transducers.
(16) Wound infections were more likely to develop in patients with lower extremity wounds who did not receive prophylactic oral antibiotics (P = .071) and those with puncture wounds who did not receive prophylactic oral antibiotics (P = .085).
(17) The earliest increase in LI (180% above control) occurred 12 hrs after needle puncture, peaked at 24 hrs (ca.
(18) Two conditions must be fulfilled: a lesion of a non collapsible vein; and a pressure gradient from outside to inside the vein, as occurs for instance during puncture of a large vein in a hypovolemic patient.
(19) In conclusion, CSF spectrophotometry is a simple, fast, and extremely sensitive method, which in our opinion should be used routinely in the diagnosis of suspected subdural haematomas, if lumbar puncture is not contraindicated.
(20) Healthy volunteers had two lumbar punctures, at least 3 weeks apart, to assess reproducibility within subjects.