(v.) One of the minute orifices in an animal or vegetable membrane, for transpiration, absorption, etc.
(v.) A minute opening or passageway; an interstice between the constituent particles or molecules of a body; as, the pores of stones.
(v. i.) To look or gaze steadily in reading or studying; to fix the attention; to be absorbed; -- often with on or upon, and now usually with over.
Example Sentences:
(1) The flow properties of white cells were tested after myocardial infarction, by measuring the filtration rates of cell suspensions through 8 microns pore filters.
(2) The functions of O-GlcNAc remain largely unknown, but it may be important in blocking phosphorylation sites, it may be required for the assembly of specific multiprotein complexes, it might serve as a nuclear transport signal, or it may be directly involved in the active transport of macromolecules across nuclear pores.
(3) The property of melittin pores is shown to be provided by the amino group of the N-terminal glycine residue.
(4) This force will be numerically similar to the net driving Starling force in small pores, but distinctly different in large pores.
(5) 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.
(6) Morphometric analysis of pores and pore complexes shows their size, structure, and density to be similar to that of other mammalian cells.
(7) Nuclear pores were frequently tagged after estradiol treatment.
(8) The toxins all create pores in the cell membrane of target cells leading to eventual cell lysis and they appear to require Ca2+ for cytotoxic activity.
(9) Thus, alkaloid and insecticide modifications share many features but differ in how much the conducting properties of the pore are changed and whether the channel can close reversibly while the toxin remains bound.
(10) A minor portion of the lymph is produced also in the lymph-fold from where it is transported in the interstitial tissue either by transfer vesicles of the circulatory blood capillaries or by pores and fenestrae of the transudatory blood capillaries.
(11) In the cis-trans axis of the Golgi apparatus the following compartments were observed: (a) On the cis face there was a continuous osmiophilic tubular network referred to as the cis element; (b) a cis compartment composed of 3 or 4 NADPase-positive saccules perforated with pores in register forming wells that contained small vesicles; (c) a trans compartment composed of 1 or 2 TPPAse-positive elements underlying the NADPase ones, followed by 1 or 2 CMPase-positive elements that showed a flattened saccular part continuous with a network of anastomotic tubules.
(12) The channels studied here were more selective for monovalent cations than anions, but also showed some permeability to anions and larger electrolytes, suggesting a large functional pore diameter.
(13) Block by Ba2+, Ca2+, Mg2+, and Pt(NH3)4(2+) from the vacuolar and cytoplasmic sides is used to probe the structure of, and ion interactions within, the pore.
(14) The increased hindrance to diffusion of the probing molecules caused by the added solutes is considered as good evidence that the probing molecules diffuse by way of pores filled with water.6.
(15) We are reporting the effect of a cellulose acetate 0.20 micron filter (Flow Pore D26) on preparation of platelet poor plasma (PPP) for subsequent assay of platelet specific proteins.
(16) A further increase in silicon dioxide concentration produced tablets with relatively larger pore sizes.
(17) 1 hour after 1200 R X-ray irradiation the pore density in regenerating liver decreases 5.8-fold, consisting only of 1.7 PCs per 1 micron2 of the NE.
(18) The effect of increasing acetylcholine concentration can best be explained by postulating an increase in the effective channel radius of the water secretion pathway from 0.40 nm to 0.45 nm together with a small increase in the fraction of the total water flow passing through larger non-selective pores.
(19) A small helix is identified at the carboxy terminus of A2 which emerges through the central pore of the B subunits and probably comes into contact with the membrane upon binding, whereas the A1 subunit is flexible with respect to the B pentamer.
(20) Under conditions of chemotaxis with activated serum beneath the filter, the neutrophil population oriented at the filter surface with nuclei located away from the stimulus, centrioles and associated radial array of microtubules beneath the nuclei, and microfilament-rich pseudopods penetrating the filter pores.
Stoma
Definition:
(n.) One of the minute apertures between the cells in many serous membranes.
(n.) The minute breathing pores of leaves or other organs opening into the intercellular spaces, and usually bordered by two contractile cells.
(n.) The line of dehiscence of the sporangium of a fern. It is usually marked by two transversely elongated cells. See Illust. of Sporangium.
(n.) A stigma. See Stigma, n., 6 (a) & (b).
Example Sentences:
(1) Follow-up studies up to 2 years postoperatively revealed satisfactorally functioning stomas in all of the patients.
(2) This surgical procedure involves removing the penile urethra and creating a permanent stoma between the skin and pelvic urethra.
(3) Both types of stoma were demonstrated objectively to defunction the distal bowel almost completely.
(4) Emergency stoma formation seems to be associated with the highest complication rates, probably because of suboptimal stoma placement.
(5) Acceptance of the stoma by family and friends was good and there were no major difficulties in practising sports and other hobbies.
(6) A universal ventilation laser fiberoptic tracheoscope has been developed for use in endoscopic treatment of patients with obstructing benign and malignant lesions of the subglottis-cervicotrachea and laryngectomy tracheal stoma.
(7) The method has been developed by the authors in view of the prevalence of strictures involving the terminal ureter and the stoma after unintubated cutaneous ureterostomy in case of a normal ureteral lumen.
(8) In both groups the patients developed post-operative pharyngo-cutaneous fistulae in approximately one third of the cases, and we found no obvious difference in the stoma's ability to shrink in the two groups.
(9) The procedure offers a choice of locations of the reservoir and stoma in most patients.
(10) Patients 60 years of age or older tolerate ileostomy well, but care of the stoma can cause problems.
(11) No patients with small bowel localization required a permanent stoma.
(12) The late complication in 3 cases was urinary incontinence of the efferent nipple valve with difficulty in catheterization of the stoma.
(13) In GPL mechanical fractures such as pouch volume and stoma size are of great importance, which is in accordance with earlier theories.
(14) A tapered distal ileal segment with a catheterizable abdominal stoma provided full continence in all 10 patients.
(15) Patients initially presenting with rectal involvement or perianal fistulas were prone to need a stoma during the course of their disease while intraabdominal fistulas, abscesses, age, sex, and longstanding disease where of no prognostic significance.
(16) Although only positive metabolic changes have been registered, we feel that gastroplasty, which is not without early postoperative complications and has a failure rate of about 30%, cannot be generally recommended until the problem of postoperative dilation of the stoma has been successfully solved.
(17) Diversion with a continent caecal reservoir was associated with fewer stoma-related problems and seemed to allow the patients greater freedom to continue activities such as sport, travel and social life.
(18) But the insertion of silicone T tube through the laryngeal stoma provided a satisfactory result for airway problem.
(19) Nipple stomas of at least 2 cm height were found to resist back-flow into the conduit better than any flat stoma.
(20) Between January 1, 1982 and June 30, 1987 a total of 122 patients suffering colorectal cancer (n = 88) or diverticulitis of the colon (n = 24) underwent surgery for construction of a transient defunctioning stoma.