(1) Isolated appressed chloroplast membranes, highly enriched in photosystem II (PSII) activity, were examined by freeze-etch electron microscopy.
(2) Paracrystalline inclusion bodies (polyhedra) which occlude insect viruses are bounded by two membrane units which are closely appressed.
(3) V. biguttatum interacted with various soil fungi by appressed growth along the host hyphae and infrequent penetrations.
(4) Evidence is presented showing that RCII translocates from the site of damage in the grana (appressed) domain of the chloroplast membranes to unappressed membrane domains where the D1 precursor protein (pD1) is translated and becomes integrated into RCII.
(5) Mature D1 appeared mostly in the a form of RCII and following its translocation to the appressed membrane domains also in the a* form.
(6) In the xylem of infected grapes, the bacteria are either distributed evenly throughout the lumen of the xylem vessel or appressed along the inner surface of the vessel walls in an electron-lucent matrix.
(7) Because the stacking process occludes the surfaces of appressed membranes, it has been impossible to conduct structural or biochemical studies of the outer surfaces of the photosynthetic membrane in regions of membrane stacking.
(8) Nitrogen-deficient plastids were found to have non-appressed lamellae, prolamellar body-like membrane aggregations, and only 2 types of freeze-fracture face.
(9) We have compared the effects of thylakoid membrane appression by electrostatic screening and by charge neutralization on the room-temperature chlorophyll fluorescence decay kinetics of broken spinach chloroplasts.
(10) In cells with larger amounts of bacteriochlorophyll, the invaginations were disc-shaped and the discs were appressed together in stacks of 2 to 10 discs each.
(11) Depending on the origin of the plastid, significant differences were observed in the percentage of appressed thylakoids.
(12) The photosynthetic membranes were not organized into appressed thylakoids or grana in the algae from any of the three species of ascidians.
(13) This epithelium is composed of type I and II pneumocytes closely appressed to an underlying capillary network.
(14) Moreover, the thylakoid membranes of ch-1 plants remain appressed even though LHCPII levels are drastically reduced.
(15) An ultrastructural study of late-stage androgonial cells of Blasia pusilla, a thallose liverwort, showed the nearly spherical nuclei often lying close or appressed to the cell walls.
(16) The tightly appressed membrane of the grana partition regions was markedly resistant to solubilization by Triton X-100.
(17) Nuclei may be isolated or closely appressed as a diplokaryotic pair which divide synchronously.
(18) The perineurial type I cells are quite closely appressed in the diapause brain, but thrown into extensive folds with large intercellular spaces in the nondiapause brain.
(19) We suggest that the modification to D1* is a means to prevent disassembly of photodamaged photosystem II complex in appressed membranes.
(20) The data presented support the concept of lateral heterogeneity of PS I and II in thylakoid membranes, but does not support a virtual or total absence of PSI in the appressed grana partitions.
Flattened
Definition:
(imp. & p. p.) of Flatten
Example Sentences:
(1) In 22 cases (63%), retinal detachment was at least partially flattened in the area of the posterior pole of the eye.
(2) Opsin becomes incorporated into the disk membrane by a process of membrane expansion and fusion to form the flattened disks of the outer segment.
(3) The cells are predominantly monopolar, tightly packed, and are flattened at the outer border of the ring.
(4) Six patients, two of whom developed sciatic neuropathy, demonstrated complete flattening of the SSEP.
(5) A radical rearrangement of the organism occurred gradually: initially oval in shape, the parasite became round, then elongated, flattened, and underwent cytokinesis.
(6) The changes included swelling, blunting, and flattening of epithelial foot processes, were accompanied by decreased stainability of glomerular anionic sites, and were largely reversed by subsequent perfusion with the polyanion heparin.
(7) In an effort to decrease the treatment time for this technique, the flattening filter has been removed from an AECL Therac-6 linear accelerator and the characteristics of the resulting beam have been measured.
(8) 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.
(9) The flattening of neutrophils occurred soon after settling, and was not followed by extension.
(10) The streets of Jiegu are now littered with concrete remnants of modern structures and the flattened mud and painted wood of traditional Tibetan buildings.
(11) The EWRGP group showed a mean flattening in corneal curvature of 0.11 and 0.15 mm in the flattest and steepest corneal meridians, respectively.
(12) The lining epithelium was a single layer of flattened or cuboidal endocervical cells.
(13) The first eigenvector, when represented by grey scale maps depicting a pair of eyes, reveals that, as average threshold increases, the visual field rises and flattens, like an umbrella that, initially closed, is simultaneously opened and thrust upwards.
(14) In older children, there were a low vertebral signal and disappearance of the disc-vertebra borders on T1-weighted images and a high vertebral signal with a decreased and flattened disc signal on T2-weighted images.
(15) Poorly-differentiated tissue produced a more haphazard out-growth of pleomorphic cells with few processes and flattened pseudopodia.
(16) In the past, ovarian cancer was more common in higher social classes, but sociocultural differences seem to have flattened off over recent decades.
(17) In the SEM three corresponding types were identified, a relatively smooth spherical type, a highly ruffled type and a fairly smooth flattened type.
(18) 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.
(19) By phase-contrast microscopy of living cells and in more detail by scanning electron microscopy, the megakaryocytes showed a nonreversible adherence, an extensive formation of filopodia around the periphery like the rays of the sun, and a tendency toward flattening.
(20) The nerve bundles, encircled by basal lamina, were enclosed by a thin connective tissue layer and by flattened fibroblast-like cells.