What's the difference between crenation and notching?
Crenation
Definition:
(n.) A rounded tooth on the edge of a leaf.
(n.) The condition of being crenate.
Example Sentences:
(1) Numerous 70-mmicro diameter vesicles apparently pinch off from the Golgi systems, transport this material through the egg, and probably then fuse to form a crenate, membrane-limited yolk droplet.
(2) In vitro incubation of human blood cells with iodinated radiographic contrast media (RCM) produced marked effects which were dose-dependent: erythrocytes showed crenation which was reversible; neutrophil leukocytes released the lysosomal enzyme beta-glucuronidase; basophil leukocytes released histamine; and platelets released serotonin as well as beta-glucuronidase.
(3) Our results indicate: 1) linear RBC pressure-flow behavior over a driving pressure range of 2 to 10.5 cm H2O with zero velocity intercepts at delta P = 0, thus suggesting the Poiseuille-like nature of the flow; 2) resistance to flow or "apparent viscosities" for normal RBC which are between 3.1 to 3.9 cPoise and are independent of driving pressure and pore geometry; 3) increased flow resistance (i.e., increased transit times) for old versus young RBC and for RBC made less deformable by DNP-induced crenation or by heat treatment at 48 degrees C; 4) increased mean transit time and poorer reproducibility when using EDTA rather than heparin as the anticoagulant agent.
(4) The incubation of old RBCs with PEP not only increased ATP and 2,3-DPG levels, but also facilitated the transformation of crenated erythrocytes to discocytes.
(5) Isolated human erythrocyte membranes crenate when suspended in isotonic medium, but can use MgATP to reduce their net positive curvature, yielding smooth discs and cup forms that eventually undergo endocytosis.
(6) At the same time the red cells became crenated and developed thorny spicules (echinocytes).
(7) Scanning electron microscopy of the platelets revealed a gradual morphologic change from biconcave flat discs to irregular, crenated forms.
(8) This crenated cell shape was reversed to a biconcave disc or cup-like form by a further treatment with lysophospholipase.
(9) On the other hand, the process was facilitated when red cells were exposed to crenators like the anionic drugs indomethacin and phenylbutazone or when DMPC was added to calcium-loaded red cells.
(10) The abnormal erythrocyte shape (crenation) was strikingly observed in all groups after four weeks of egg yolk feeding with good correlation to lipid levels (r = 0.9, p less than 0.001).
(11) Maintaining a higher level of albumin during EC by adding 50 g human albumin to the extracorporeal system prevented erythrocyte crenation.
(12) Uptake of phosphine by erythrocytes causes crenation, but conversion of oxyhaemoglobin to methaemoglobin and hemichrome could not be demonstrated.
(13) These results revealed that ioxaglate, an ionic contrast medium, was the best in vitro medium, to prevent aggregation of red cells and crenation deformity of erythrocytes.
(14) In contrast to the control and the regression rats, many of the hypertrophic vessels of all types in the hypoxic rats showed signs of constriction, ie, crenation of the wall, indentations of medial smooth muscle cell nuclei, and excrescences of smooth muscle cell cytoplasm, often protruding deeply into the endothelium.
(15) We demonstrate that the damage consists of lifting, crenation and detachment of endothelial cells, partially due to contracture and forceful redilation of the vessel wall.
(16) KB-2796 and FNZ at 10-100 microM dose-dependently prevented crenation of rabbit erythrocytes induced by the Ca2+ ionophore A23187.
(17) Electron microscopy of the endothelial layer of intimal explants showed dilatations in the intercellular junctions and cellular changes representing contraction--increased prominence of cytoplasmic filaments, nuclear crenation, and cytoplasmic protrusions--at 30 and 60 minutes.
(18) Raising this concentration reversibly decreased the degree of crenation.
(19) These amphiphiles immediately induced strongly crenated erythrocytes which during incubation shifted to less crenated erythrocytes or to stomatocytes.
(20) Osmiophilic granules with a homogeneous core, crenated membrane and narrow submembranous halo predominated in the columnar juxtacortical cells.
Notching
Definition:
(p. pr. & vb. n.) of Notch
(n.) The act of making notches; the act of cutting into small hollows.
(n.) The small hollow, or hollows, cut; a notch or notches.
(n.) A method of joining timbers, scantling, etc., by notching them, as at the ends, and overlapping or interlocking the notched portions.
(n.) A method of excavating, as in a bank, by a series of cuttings side by side. See also Gulleting.
Example Sentences:
(1) The Notch locus in Drosophila encodes a transmembrane protein required for the determination of cell fate in ectodermal cells.
(2) Recent reports have indicated the usefulness of nuclear grooves (clefts or notches) as an additional criterion for the diagnosis of papillary thyroid carcinoma in fine needle aspirates; most of these studies were carried out on alcohol-fixed material stained with the Papanicolaou stain or with hematoxylin and eosin, which yield good nuclear details.
(3) For histometric evaluation, the radicular notches were used as reference points.
(4) Conversely, in 66 of 80 pregnancies the absence of a notch was associated with the livebirth of an infant beyond 32 weeks gestation, with a birthweight above the 5th centile.
(5) The left subclavian artery was prominent in 33 cases, signs indicating a collateral circulation (rib notching, internal mammary artery) were present in 26 cases.
(6) Notched tympanograms were typical of neonatal ears for a 220-Hz probe tone.
(7) Radiographic manifestations include endosteal sclerosis of the neurocranium with loss of the diploë, osteosclerosis and hyperostosis of the mandible with absence of the normal antegonial notches, endosteal sclerosis of the diaphyses of long bones (including metacarpals and metatarsals), and osteosclerosis of the pelvis.
(8) For the experimental studies, fractures of the jaw bone in terms of oblique osteotomies from angle to sigmoid notch of the mandible of the Malaysian monkeys were made by using #700 fissure bur and reduced and fixed them in terms of interosseous wiring.
(9) Lymphadenopathies were classified by the criteria proposed by Yoshinaka et al., type I: poorly-defined borders, diffuse internal echoes; type II: well-defined borders, diffuse internal echoes; type III: well-defined borders, notchings, strong internal echoes.
(10) Here, we examine a group of six recessive mutations, the facets (fa, fa3, fag, fag-2, fafx and fasw), which affect eye and optic lobe morphology and have been previously shown to be associated with the insertion of transposable elements into an intronic region of Notch.
(11) Another frequent finding was partial or total obstruction at the tentorial notch, often in combination with reduced or absent activity along the superior sagittal sinus.
(12) In one patient, the fibrous band extended from the distal pole of the patella to the intracondylar notch, tethering the patella inferiorly.
(13) This thin flap, usually extending from the hyoid bone to the sternal notch at the central part of the anterior neck, provides a skin island of about 4 by 8 cm.
(14) The chest roentgenographic findings in Takayasu's arteritis include widening of the ascending aorta, contour irregularities of the descending aorta, arotic calcifications, pulmonary arterial changes, rib notching, and hilar lymphadenopathy.
(15) In two cases the epidermoid, located mainly in the cerebello-pontine angle, spread into the middle cranial fossa; in three the epidermoid extended from the parasellar cisterns to the posterior cranial fossa; in six patients the epidermoid, enlarging the tentorial notch, occupied extensively both cranial fossae.
(16) This post-transcriptional regulation is suppressed in embryos mutant for the genes Notch and Delta; where all cells expressing RNA accumulate protein.
(17) The femoral intercondylar notch width was measured in 93 patients with chronic anterior cruciate ligament (ACL) insufficiency (Group 1), in 62 patients with an acute tear of the ACL (Group 2), and in 38 fresh anatomic specimen knees (Group 3).
(18) Deep notch cases had more retrusive mandibles with a shorter corpus, smaller ramus height, and a greater gonial angle than did shallow notch cases.
(19) The acicular alpha structure has been shown to exhibit the best fatigue properties for Ti-6A1-4V alloy in the notched condition.
(20) The anatomical relations of the semilunar notch of the ulna were studied in radiographs, taken in a strict lateral view, from 100 patients with elbow dislocations.