What's the difference between dense and sparse?

Dense


Definition:

  • (a.) Having the constituent parts massed or crowded together; close; compact; thick; containing much matter in a small space; heavy; opaque; as, a dense crowd; a dense forest; a dense fog.
  • (a.) Stupid; gross; crass; as, dense ignorance.

Example Sentences:

  • (1) Patients with papillary carcinoma with a good cell-mediated immune response occurred with much lower infiltration of the tumor boundary with lymphocyte whereas the follicular carcinoma less cell-mediated immunity was associated with dense lymphocytic infiltration, suggesting the biological relevance of lymphocytic infiltration may be different for the two histologic variants.
  • (2) In spite of dense lymphocytic infiltration only 3% of the tumor infiltrating lymphocytes exhibit the activation marker CD 25.
  • (3) Immunogold electron microscopy demonstrated that outer dense fibres were the predominant immunoreactive site.
  • (4) Electron microscopy revealed the presence of a hitherto unreported peculiar "pilovacuolar" inclusion in numerous mitochondria, composed of an electron dense pile or rod within a vacuole, while globular or crystalline inclusions were absent.
  • (5) A recent report suggested that neurons in the prefrontal, anterior cingulate, and primary motor cortex of the brains of schizophrenic subjects may be less dense than those in the brains of nonschizophrenic subjects.
  • (6) Two years ago, the Intergovernmental Panel on Climate Change declared Egypt's Nile Delta to be among the top three areas on the planet most vulnerable to a rise in sea levels, and even the most optimistic predictions of global temperature increase will still displace millions of Egyptians from one of the most densely populated regions on earth.
  • (7) Chick sympathetic nerve fibers densely innervate expansor secundariorum muscle, but not skeletal muscle.
  • (8) Electron microscopy revealed a well-developed rough endoplasmic reticulum, an enlarged Golgi apparatus and many highly electron-dense secretory granules resembling those of Clara cells.
  • (9) In the first assay, we used a simple density separation technique to remove dense neutrophils (PMN) from suspensions of blood and of bone marrow cells prior to culture in semisolid agar.
  • (10) In contrast to the defect in another packaging-deficient mutant ts1201, the block in the formation of dense-cored, DNA-containing capsids in ts1233-infected cells at the NPT could not be reversed by transferring the cells to the permissive temperature in the presence of a protein synthesis inhibitor.
  • (11) The outstanding morphologic feature of cortical cells exposed to microunit ACTH concentrations for 40 min was the abundance of electron-dense granules (0.2-0.4 mum).
  • (12) The majority of intensively stained and densely packed cells have been observed in tv nucleus.
  • (13) The wall of the yolk sac thickens as a result of this infolding and the densely packed capillaries.
  • (14) Viral particles in the cultures and the brain were of various sizes and shapes; particles ranged from 70 to over 160 nm in diameter, with a variable position of dense nucleoids and less dense core shells.
  • (15) Martin O’Neill spoke of his satisfaction at the Republic of Ireland’s score draw in the first leg of their Euro 2016 play-off against Bosnia-Herzegovina – and of his relief that the match was not abandoned despite the dense fog that descended in the second half and threatened to turn the game into a farce.
  • (16) Phagosomes and dense bodies reminiscent of Russel bodies also occurred in the Mikulicz cells, in the vacuoles of which formations representing Klebsiella rhinoscleromatis were demonstrated.
  • (17) Electron microscopic examination of all leptomeningeal and meningioma cultures revealed desmosomes and dense tonofilament formation; in addition, granular, filamentous basement membrane-like material was abundant in the extracellular spaces of all cultures.
  • (18) Genes of the baker's yeast Saccharomyces cerevisiae are densely clustered on 16 linear chromosomes.
  • (19) The results suggest that the conversion of the HRP-TMB reaction product to an electron-dense form during osmication is intimately associated with the pH of the phosphate buffer and the total time of osmication.
  • (20) Chemical binding studies showed that the teichoic acid was the major uranyl binding component in isolated walls, from which it might be inferred that teichoic acid was located in the densely staining regions.

Sparse


Definition:

  • (superl.) Thinly scattered; set or planted here and there; not being dense or close together; as, a sparse population.
  • (superl.) Placed irregularly and distantly; scattered; -- applied to branches, leaves, peduncles, and the like.
  • (v. t.) To scatter; to disperse.

Example Sentences:

  • (1) Homozygotes have sparse greasy fur and lower viability and fertility than normal littermates.
  • (2) Fifteen days after axotomy of the olfactory nerves, two stained patterns which were numerously or sparsely labelled regions were observed.
  • (3) The capacity (Bmax) for [3H]ketanserin binding was significantly lower (-21%; p less than 0.05) in sparse fur animals than in control animals; there was no change in affinity (KD).
  • (4) Sparse cell plating densities were used to minimize cell-cell contact formation and all studies were carried out in chemically defined medium that contained a saturating amount of soluble growth factors.
  • (5) With this modification one obtains, for sparsely ionizing radiation, a quality factor which is proportional to the dose average of lineal energy, y.
  • (6) Long term data on thiazide monotherapy are sparse but suggest a persistence of the lipid effect for as long as 6 years of treatment.
  • (7) If a sparse crowd, shivering in suddenly chill conditions out of step with the warmth Edmonton had enjoyed in previous days, did not exactly help the atmosphere, the action remained intense.
  • (8) We have investigated alternative ways of showing variations in child health by using different aggregations of Enumeration Districts (ED) in a small, sparsely populated rural area.
  • (9) The literature on the possible risk of myasthenia gravis complicating pregnancy and delivery is sparse and partly contradictory but some of the reports on the number of perinatal and neonatal deaths are alarming.
  • (10) Fewer, but still ample numbers, of SP-reactive axons are present also in the ventral tegmental and retrorubral areas of the midbrain tegmentum and in the ventral pallidum of the basal forebrain, but only sparse ME-reactive axons are present in these areas.
  • (11) Histologically, vascular lesions such as vacuolization, degeneration and desquamation of the endothelium and hyalinization and necrosis of the muscular coat predominated, whereas reparatory reactions were relatively sparse.
  • (12) Two principal classes of striatum long axonal neurons (sparsely ramified reticular cells and densely ramified dendritic cells) were analyzed quantitatively in four animal species: hedgehog, rabbit, dog and monkey.
  • (13) Instead the government insists that the sparse legislative agenda reflected a streamlining of government priorities to help it better cope with the downturn.
  • (14) The situation of high cell density could be mimicked by the addition of glutaraldehyde-fixed cells to sparsely seeded proliferating cells.
  • (15) Delta opioid labeling was sparse throughout most of the hypothalamus; however, moderate binding densities were detected in the suprachiasmatic and ventromedial nucleus.
  • (16) Except for sparse labeling in lamina I in some of the cases and some minor differences rostrocaudally, the spinal distribution of labeling was similar to that from the other nerves investigated.
  • (17) This hypothesis is supported by the observation that the single cell type which continues to express the vimentin-IFAPa-400 combination in the mature heart is the Purkinje fibres, which are also subjected to high mechanical tensions but in which myofibrils are generally sparse compared to working myocytes.
  • (18) Collateral coronary blood flow was fairly sparse in most cases and in 4 left ventricular dysfunction of varying degree was present.
  • (19) The technique of long-term, open catheterization of the spinal subarachnoid space for infusion of analgesics in patients with refractory cancer pain is sparsely reported in the literature.
  • (20) A sparse adrenergic innervation of the detrusor muscle was found.