What's the difference between accretion and aggregation?

Accretion


Definition:

  • (n.) The act of increasing by natural growth; esp. the increase of organic bodies by the internal accession of parts; organic growth.
  • (n.) The act of increasing, or the matter added, by an accession of parts externally; an extraneous addition; as, an accretion of earth.
  • (n.) Concretion; coherence of separate particles; as, the accretion of particles so as to form a solid mass.
  • (n.) A growing together of parts naturally separate, as of the fingers toes.
  • (n.) The adhering of property to something else, by which the owner of one thing becomes possessed of a right to another; generally, gain of land by the washing up of sand or sail from the sea or a river, or by a gradual recession of the water from the usual watermark.
  • (n.) Gain to an heir or legatee, failure of a coheir to the same succession, or a co-legatee of the same thing, to take his share.

Example Sentences:

  • (1) Each process has been linked to the regulation of cholesterol accretion in the arterial cell.
  • (2) From the regression coefficients it was calculated that, for the accretion of 1 g body protein, the dietary amino acid requirements were (mg) threonine 47, valine 53, methionine + cystine 36, methionine 19, isoleucine 43, leucine 78, phenylalanine + tyrosine 84, phenylalanine 41, lysine 68 and tryptophan 12.
  • (3) This must involve the additional accretion or synthesis of dipicolinic acid.
  • (4) Protein accretion in the regenerating liver preceded mitosis, but was accompanied by increases in RNA content and fractional rates of protein synthesis (ks).
  • (5) Aggregated proteoglycans inhibit mineral accretion in vitro.
  • (6) The magnitude of the changes in growth performance, tissue accretion rates and body composition elicited by pGH were independent of strain.
  • (7) Consequently, size of the exchangeable Ca pool, accretion rate and balance across bone were higher in these goats.
  • (8) On the other hand, there was no increase in percent protein accretion (both 15% of weight gain).
  • (9) The absolute rate of MT accretion was less in macrophages incubated with 25 microM- as compared with 50 microM-Zn2+, owing to decreased and increased rates of MT synthesis and degradation respectively.
  • (10) Previously, we observed that HSV infection causes a 40-fold increase in cholesteryl ester (CE) accretion in arterial smooth muscle cells due, in part, to a substantial decrease in CE hydrolysis.
  • (11) During the suckling period there is high hepatic protein accretion and the portal vein glutamine concentration is twice that in the adult, whereas hepatic vein glutamine concentration is similar between adult and suckling rats.
  • (12) Carcass protein accretion rate increased (P less than .001) up to approximately 150 micrograms of pST.kg BW-1.d-1, whereas lipid deposition decreased (P less than .001) with each incremental dose of pST.
  • (13) On d -22, 67 and 155, blood was sampled every 20 min for 8 h. Relative to LPN, HPN increased (P less than .01) ADG by 28%, carcass weight by 26% and accretion of carcass fat by 109% and carcass protein by 20%.
  • (14) However, much of the localization to the tumors was due to nonspecific factors, as evidenced by the considerable tumor accretion of the control antibody.
  • (15) Mithramycin at the low dosage had little effect on the rate of bone accretion.
  • (16) The analysis of chromatin, therefore, indicates that unligated repair sites are sites of protein accretion which block exonuclease III action.
  • (17) Retention of Ca and P in both groups was significantly below estimates of intrauterine accretion.
  • (18) Fractional accretion rates of total body 3-methylhistidine containing proteins (actin and myosin) were elevated 40% to 120% in rats fed a high-carbohydrate diet containing 10 or 100 ppm cimaterol for 1 week.
  • (19) The investigators' hypothesis that there would be more accretions on the side not involved in osseous surgery and pocket eradication was not supported in this study.
  • (20) Our previous studies with a 90Y-labelled antibody against carcinoembryonic antigen (CEA) conjugated to the cyclic anhydride-DTPA (CA-DTPA) indicated that the accretion of 90Y in the bone may limit the application of 90Y-labelled antibodies for therapy.

Aggregation


Definition:

  • (n.) The act of aggregating, or the state of being aggregated; collection into a mass or sum; a collection of particulars; an aggregate.

Example Sentences:

  • (1) Aggregation was more frequent in low-osmolal media: mainly rouleaux were formed in ioxaglate but irregular aggregates in non-ionic media.
  • (2) We have examined overlapping octapeptides from the kappa IIIb light chain variable region and show that some framework peptides have the ability to bind aggregated IgG.
  • (3) Platelet-rich plasma (PRP) was prepared, and platelet aggregation studies were conducted directly or conducted on washed platelets prepared from PRP collected with ACD.
  • (4) Macrophages internalize aggregated low density lipoprotein (LDL) by LDL receptor-dependent phagocytosis.
  • (5) Cicaprost is an orally available analogue of PGI2 and has been shown to inhibit platelet aggregation in both in vitro and animal studies.
  • (6) Only IgG2a and IgG2b myeloma proteins bound readily to IC-21 Fc-receptors, the former in nonaggregated as well as aggregated form, the latter only as aggregated complexes.
  • (7) When the aggregates occurred on the cell periphery their position coincided with areas free of lamellae.
  • (8) 2-(4'-Isobutylphenyl)propionic acid, ibuprofen, is an antiinflammatory agent which possesses moderate platelet aggregation inhibitory activity.
  • (9) In addition, spontaneous platelet aggregation is increased when vegetations are present on cardiac valves.
  • (10) At concentrations several hundredfold higher than the equivalents present in the minimum concentration of rat skin soluble collagen required for platelet aggregation, neither Hyl-Gal (at 29 muM) nor Hyl-Gal-Glc (at 18 muM) caused platelet aggregation or inhibited platelet aggregation by native collagen.
  • (11) The mechanisms leading to spontaneous platelet aggregation and thrombocytopenia appear to be similar to those described for other patients with type IIB vWD.
  • (12) There is approximately a 25% decrease in aggregation from regions of the rib distal to the metaphyseal-growth plate junction (69%) to the region proximal to it (50%).
  • (13) Laboratory data were aggregated similarly within each study, using the last active drug as a grouping factor.
  • (14) No correlation could be found between DS content and state of aggregation.
  • (15) The synthetic S-nitroso-thiol, S-nitroso-N-acetylcysteine, markedly inhibited platelet aggregation with an IC50 of 6 nM.
  • (16) On the other hand, ultraviolet (320-nm) light, absorbed by 3-hydroxy-pyridinium cross-links which were rapidly photolyzed, partially dissociated polymeric collagen aggregates from bovine Achilles tendon after subsequent heating.
  • (17) The ternary complex consisting of a 65-kDa peptide originating from the proteoglycan core protein and a 43-kDa link protein bound to hyaluronic acid was purified from a clostripain digest of the rat chondrosarcoma aggregating proteoglycan and 14C-carbamylated with potassium [14C]cyanate.
  • (18) The IC50 on arachidonic acid-induced platelet aggregation was: fisetin, 22 microM; kaempferol, 20 microM; quercetin, 13 microM; morin, 150 microM less than IC50 less than 300 microM.
  • (19) Changes in the determinants of blood viscosity (packed cell volume, plasma viscosity, red cell aggregation, and red cell deformability) were studied on day 1 and day 5.
  • (20) Released aggregates of the 19.6-kDa protein were removed from suspension by ultracentrifugation and separated from contaminating membranes by washing in 1.0% sodium dodecyl sulfate (SDS).