(a.) Concave on both sides; as, biconcave vertebrae.
Example Sentences:
(1) The normal disks were biconcave, whereas the surgically removed disks were deformed and thicker than the normal disks.
(2) The normal red cells were biconcave disks in which chlorpromazine induced inward (negative) curvature: deep cupping (stomatocytosis) and multiple invaginations.
(3) The relationships observed support the following conclusions: (A) the femoral score and the metacarpal index are related to the degree of osteopenia; (B) the biconcavity index reflects the extraskeletal factors that are pathogenic in spinal osteoporosis; (C) a reduced femoral trabecular pattern index is associated with spinal osteoporosis, although this measurement is not related to the degree of osteopenia; and (D) it may be imprudent to diagnose osteoporosis from the presence of lumbar compression fractures.
(4) As well as an increase in the electron density, configurational distortion modified the normal biconcave forms to ameboid structures.
(5) Scanning electron microscopy of the platelets revealed a gradual morphologic change from biconcave flat discs to irregular, crenated forms.
(6) This crenated cell shape was reversed to a biconcave disc or cup-like form by a further treatment with lysophospholipase.
(7) Development of lateral bodies and modeling of the biconcave cores was observed within 30 min, and structurally mature virions were present by 2 hr after the removal of rifampin.
(8) The fossa was almost flat, slightly convex antero-posteriorly and concave medio-laterally; the disc was biconcave and the condyle oval.
(9) Normal biconcave erythrocytes were transformed by the lysolipid lysolecithin (1-alpha-lysophosphatidylcholine, LPC) into spiculated and sphered corpuscles which had a normal viscosity at high shear rates despite their abnormal shape.
(10) The capsid may bend into an open torus, conferring a biconcave disk or kidney-shaped morphology to the virion (largest diameter 120-140 nm) or the capsid may be straight, resulting in a rod-shaped particle (35 X 170 nm).
(11) The vertebral bodies were biconcave, and kyphosis and scoliosis developed.
(12) I designed a biconcave floating contact lens used for trans pars plana vitreous surgery.
(13) Fifteen patients with compression fractures and five with biconcave fractures were studied.
(14) Combining low temperatures for lysis and high temperatures for resealing and sufficient energy supply are advantageous for highest recovery of biconcave discocytes.
(15) The explanations are supported by the resealed ghost shapes observed before and after the treatments; shape recovery from the monoconcave spheroid toward biconcave discoid is observed in most cases concomitantly with improvements of flow characteristics.
(16) The findings demonstrate that A23187 causes a time- and concentration-dependent conversion of biconcave erythrocytes into echinocytes and spheroechinocytes.
(17) A soft, self-adhering, biconcave silicone contact lens is presented.
(18) This results from the asymmetric form (biconcave disc) of these cells.
(19) We find that by reducing the volume, the stable shape can change from a circular biconcave shape as in red blood cells, to elliptical, triangular, square, and other polygonal shapes.
(20) Each vertebra from third thoracic (T3) to fifth lumbar (L5) received a score of "1" if normal, "2" if biconcave and "4" if crushed or fractured.
Concave
Definition:
(a.) Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the curve of the of the inner surface of an eggshell, in opposition to convex; as, a concave mirror; the concave arch of the sky.
(a.) Hollow; void of contents.
(n.) A hollow; an arched vault; a cavity; a recess.
(n.) A curved sheath or breasting for a revolving cylinder or roll.
(v. t.) To make hollow or concave.
Example Sentences:
(1) In the absence of glutamine the aggregate is readily dissociated following dilution of the extract; that is, velocity concaves upward as a function of increasing protein concentration.
(2) Under the SEM, the unstained area of rods is always showing a concavity, which is just a nucleoid in sections under the TEM.
(3) Three cases are presented in which a focal concave deformity occurred along the greater curvature of the stomach on upper gastrointestinal (GI) series.
(4) This change in shape varied from a slight flattening of the LV and IVS during diastole to total reversal of the normal direction of septal curvature such that the IVS became concave toward the RV and convex toward the LV.
(5) The technique combines the conventional plotting the contour lines and the highlighting, by means of hatching, of the concavities (or convexities) of the 'surface' representative of radioactive distribution.
(6) The trapezoidal shape of the vertebrae and scarring of the soft tissues within the concavity made correction difficult.
(7) On freeze-fracture preparations, the fragments with concave profile, corresponding to the external fracture face of plasma membrane, displayed an intramembrane particle density (ranging from 0 to 750 particles per micron2) which is similar to that recorded on the corresponding fracture face of intact cells from the common lymphoblastic leukemia antigen positive leukemic cell line (Nalm-1) or of vesicles shed in the culture medium by Nalm-1 cells.
(8) In testicular and cauda spermatozoa NBD-phallacidin fluorescent material was present in the two ventral processes that extended from the upper concave surface of the sperm head; also fainter material occurred along the concave border and as a dorsocaudal spur.
(9) When viewed in the lateral projection, the concavities superimpose, lying in the posterior portion of the vertebral body.
(10) Dose-effect relationships for most of the sampling times were linear and sometimes linear-quadratic concave upward or downward.
(11) This should be prevented by a bone-graft operation along the concave side of the tibia.
(12) Since February 1982, 23 patients with scoliosis were treated by releasing the soft tissues on the concave side and plaster spinal fusion jacket.
(13) The DRT curves of all data were concave and appeared to have two discrete slopes (z(D) values).
(14) Between the concave surfaces of two bent cadaverine molecules exists water channels all along the short b axis.
(15) Homotropic cooperative effects were observed as shown by the concave downward curvature of the reciprocal plots.
(16) The late mortality is 3.8% per patient-year--standard disc group 2.9% per patient-year and convexo-concave group 4.3% per patient year (no significant difference).
(17) The relationship between chloride transport and extracellular chloride in the presence of bromide is concave upward which suggests that this anion inhibits chloride movement.
(18) (3) A row of regularly spaced ribosomes located in the concavity, but at some distance from the arciform filament.
(19) The authors also consider a problem of how to interpret the symptom of a "snake mouth" or a "concave lens" which (depending on its cause) can be either transient (in a large concrement) or stable (in an exophytic tumor, completely occluding the duct).
(20) In both maxillary and mandibular teeth, approximal concavities often started in enamel, extending down to the root surface.