(n.) The act or process of condensing or of being condensed; the state of being condensed.
(n.) The act or process of reducing, by depression of temperature or increase of pressure, etc., to another and denser form, as gas to the condition of a liquid or steam to water.
(n.) A rearrangement or concentration of the different constituents of one or more substances into a distinct and definite compound of greater complexity and molecular weight, often resulting in an increase of density, as the condensation of oxygen into ozone, or of acetone into mesitylene.
Example Sentences:
(1) Here we report that sperm from psr males fertilizes eggs, but that the paternal chromosomes are subsequently condensed into a chromatin mass before the first mitotic division of the egg and do not participate in further divisions.
(2) These studies indicate that at each site of induction during feather morphogenesis, a general pattern is repeated in which an epithelial structure linked by L-CAM is confronted with periodically propagating condensations of cells linked by N-CAM.
(3) The propionyl-CoA condensing enzyme which catalyzes the first step in the biosynthesis of 2-methylbutyrate and 2-methylvalerate by Ascaris muscle appears to exist in at least three forms in the mitochondria of this parasitic nematode.
(4) Because the contour length of these loops was proportionate to the DNA content of the superinfecting lambda phage, it was concluded that the fibers contained DNA condensed 6.5-fold in blocks of about 250 base pairs.
(5) Allyl 4-O-benzyl-alpha-L-rhamnopyranoside was converted into allyl 4-O-benzyl-3-O-methyl-alpha-L-rhamnopyranoside and this was condensed with 2,3,4-tri-O-acetyl-alpha-L-rhamnopyranosyl chloride to give a disaccharide derivative which was converted into allyl 4-O-benzyl-2-O-(2,3-O-isopropylidene-alpha-L-rhamnopyranosyl)-3-O-methyl -alpha- L-rhamnopyranoside.
(6) Moderately dense fragments are interpreted as originating from dying cells in which the cytoplasm is undergoing condensation.
(7) In the scope of our research about the antimicrobial activity of aldehyde-amin-condensates a number of partly new unsymmetrically substituted animals was synthesized by reaction of formaldehyde with different secondary amines.
(8) They are thought to represent condensations of dense bodies in degenerating tumor cells.
(9) The blood lymphocytes were small with scanty cytoplasm, densely condensed nuclear chromatin, and deep clefts originating in sharp angles from the nuclear surface.
(10) The 2-substituted phenoxy-6-methoxy-8-aminoquinolines (4-6) were afforded by reduction of the corresponding 8-nitroquinolines (1-3) which were obtained by condensation of 2-chloro-6-methoxy-8-nitroquinoline and substituted phenols.
(11) Both main-stream and side-stream cigarette smoke condensates and some fractions, containing water-soluble bases, water-insoluble bases, and polycyclic aromatic hydrocarbons, were found to induce AHH activity in lung and liver, the lung being induced to the greatest extent.
(12) Ultrastructurally, transgenic domains were often intimately connected with constitutive heterochromatin and were highly condensed.
(13) This paper describes a new method of condensation (focusing) of extended volumes of mixtures of proteins (or other ampholytes) into an isoelectric spectrum of discrete zones located at points of a pH gradient corresponding to the pI value of the individual proteins.
(14) 4, 323-340, 1978) has a ts defect in its regulatory mechanism for the initiation of chromosome condensation, the so-called, premature chromosome condensation (PCC) being induced at a nonpermissive temperature (Nishimoto, T. et al.
(15) Chemical analysis of the smoke concensate of bidis and cigarettes showed that condensate from bidis had a higher benzo[a]pyrene level than was observed in cigarette smoke condensate, when compared on the basis of the mass (mg) burnt.
(16) On very rare occasions there is missorting such that aggregates of condensed secretory proteins and viruses occur together in post-Golgi vesicles.
(17) The reductions are carried out at the nanogram to microgram level with borane, reacting the solid sample with condensed reagent vapor.
(18) These data suggest that the main route for the formation of the carbon skeleton of aspartate was by a C(3) plus C(1) condensation, with the C(3) unit derived from the isopropyl carbons of valine and the C(1) unit probably from carbon dioxide.
(19) Once an apical hard tissue barrier is formed, a permanent root canal filling can be safely condensed.
(20) While the antiserum against gamma 3-MSH labelled all the secretory granules including intrasaccular condensations in the Golgi apparatus, antisera against alpha-MSH only labelled extra-Golgi secretory vesicles (SV).
Recondensation
Definition:
(n.) The act or process of recondensing.
Example Sentences:
(1) Early pronuclear formation was associated with the occurrence of dense outline material, probably a precursor of the future pronuclear membrane, around the recondensed nucleus in re-expansion (phase 3).
(2) We observed a significant difference between normospermia and asthenozoospermia in the ability to achieve the cycle of chromatin decondensation-recondensation.
(3) The decondensed sperm nuclei were recondensed and then transformed to metaphase chromosomes which were morphologically compacted at first but became slightly dispersed later.
(4) During a 3-hour incubation, the activated sperm nuclear chromatin underwent a decondensation-recondensation cycle during which DNA was synthesized.
(5) After the 37-nm and the 65-nm fibers had been dispersed in Mg2+-free solutions they could be recondensed by incubation in 0.6 mM and 1.0 mM MgCl2, respectively.
(6) Separation of solubilized proteins from unfolded chromatin (DNA) was accomplished by recondensation of the chromatin (DNA) in the presence of Mg2+ before centrifugation.
(7) The subsequent recondensation of 214Pb causes an enrichment of larger aerosols.
(8) doses and longer periods of incubation leads to recondensed chromosomes that are fragmented.
(9) The early sperm nuclear development in human egg ooplasm can be divided into three phases: the sperm nucleus first decondenses (phase 1) then partly recondenses (phase 2) before expanding again to form an early male pronucleus (phase 3).
(10) Recondensation by acidic histamine began in the range of 1-10 mM with a dose response curve that was accurately predicted by a Hill type equation with four highly cooperative binding sites and a half maximum concentration of [Hi++] = 3.9 mM.
(11) During G2 the chromosomes progressively recondense and coil in apparent preparation for prophase.
(12) When normal human sperm is permeabilized and then mixed with frog egg extract, the sperm nuclei decondense, synthesize DNA, and recondense during a three-hour time course.
(13) It appears that restriction enzymes will cleave the highly condensed DNA in mitotic cells but that decondensation, DNA replication, and recondensation are required before the aberrations are manifested.
(14) Poly(ADP-ribosyl)ation of H1-depleted chromatin prevented the recondensation of polynucleosomes reconstituted with exogenous histone H1.
(15) The principle of the apparatus consists in the production of water vapor of the desired temperature under conditions of reduced pressure and its recondensation to water after having passed a special chamber.
(16) Particles with vaporization points below the sampling temperature, including H2SO4, can vaporize, pass through the glass fiber filters, and then recondense when cooled below their dew points.
(17) They were unable to remove thymine dimer lesions from their DNA, had a severe reduction of the RNA synthesis rates after UV irradiation, and showed no reactivation of an UV-inactivated indicator gene and no DNA recondensation after UV irradiation.
(18) Replicated DNA is recondensed and gene activities are shut down in the recondensed chromatin.
(19) Recondensation of chromosomes in the spermatocytes is observed just prior to entry into the seminal vesicle, where meiosis I is completed and meiosis II takes place.
(20) The chromatin decondensation-recondensation cycle was divided into four stages according to chromatin appearance.