What's the difference between dose and portion?

Dose


Definition:

  • (n.) The quantity of medicine given, or prescribed to be taken, at one time.
  • (n.) A sufficient quantity; a portion; as much as one can take, or as falls to one to receive.
  • (n.) Anything nauseous that one is obliged to take; a disagreeable portion thrust upon one.
  • (n.) To proportion properly (a medicine), with reference to the patient or the disease; to form into suitable doses.
  • (n.) To give doses to; to medicine or physic to; to give potions to, constantly and without need.
  • (n.) To give anything nauseous to.

Example Sentences:

  • (1) This trend appeared to reverse itself in the low dose animals after 3 hr, whereas in the high dose group, cardiac output continued to decline.
  • (2) The resulting dose distribution is displayed using traditional 2-dimensional displays or as an isodose surface composited with underlying anatomy and the target volume.
  • (3) Age difference did not affect the mean dose-effect response.
  • (4) The rash presented either as a pityriasis rosea-like picture which appeared about three to six months after the onset of treatment in patients taking low doses, or alternatively, as lichenoid plaques which appeared three to six months after commencement of medication in patients taking high doses.
  • (5) Neutrons induced a dose-dependent cytotoxicity and mutation frequency in the AL cells.
  • (6) Urinary ANF immunoreactivity was significantly enhanced by candoxatril in both groups (P less than 0.05 and P less than 0.01 in groups 1 and 2, respectively), with a more pronounced effect evident at the higher dose (P less than 0.01).
  • (7) Open field behaviors and isolation-induced aggression were reduced by anxiolytics, at doses which may be within the sedative-hypnotic range.
  • (8) The fraction of the viral dose which became cell associated was independent of the incubation temperature and increased with increasing target membrane concentration.
  • (9) The second group only with Haloperidol (same dose).
  • (10) The level of gadd45 mRNA increased rapidly after X rays at doses as low as 2 Gy.
  • (11) The cumulative incidence of grade II and III acute GVHD in the 'low dose' cyclosporin group was 42% compared to 51% in the 'standard dose' group (P = 0.60).
  • (12) The diffusion of Myocamicin in the prostatic tissue of patients undergoing prostatectomy after a single oral dose of 600 mg has been studied.
  • (13) In X-irradiated litters, almost invariably, the incidence of anophthalmia was higher in exencephalic than in nonexencephalic embryos and the ratio of these incidences (relative risk) decreased toward 1 with increasing dose.
  • (14) Similarly, doses of deferoxamine at the time of the study were not different.
  • (15) A survey carried out two and three years after the launch of the official campaign also showed a reduction in the prevalence of rickets in children taking low dose supplements equivalent to about 2.5 micrograms (100 IU) vitamin D daily.
  • (16) A quantitative comparison of tissue distribution and excretion of an orally administered sublethal dose of [3H]diacetoxyscirpenol (anguidine) was made in rats and mice 90 min, 24 hr, and 7 days after treatment.
  • (17) The inhibitory effects were stronger in A549 lung cancer cells than in HEL cells at the same TFP dose.
  • (18) At the highest dose of chloroquine tested (500 microM), a slightly greater increase in insulin binding and a decrease in insulin degradation were observed in fetal cells as compared with adult cells.
  • (19) Pituitary weight, mitotic index and chromosomes were studied in male rats following a single or repeated dose of estradiol-benzoate for a total period of 210 days.
  • (20) Estimates of the risk probability for each dose level and sacrifice time are found utilizing the sample likelihood as the posterior density.

Portion


Definition:

  • (n.) That which is divided off or separated, as a part from a whole; a separated part of anything.
  • (n.) A part considered by itself, though not actually cut off or separated from the whole.
  • (n.) A part assigned; allotment; share; fate.
  • (n.) The part of an estate given to a child or heir, or descending to him by law, and distributed to him in the settlement of the estate; an inheritance.
  • (n.) A wife's fortune; a dowry.
  • (v. t.) To separate or divide into portions or shares; to parcel; to distribute.
  • (v. t.) To endow with a portion or inheritance.

Example Sentences:

  • (1) The patterns observed were: clusters of granules related to the cell membrane; positive staining localized to portions of the cell membrane, and, less commonly, the whole cell circumference.
  • (2) The low affinity of several N1-alkylpyrroleethylamines suggests that the benzene portion of the alpha-methyltryptamines is necessary for significant affinity.
  • (3) The half-life of 45Ca in the various calcium fractions of both types of bone was 72 hours in both the control and malnourished groups except the calcium complex portion of the long bone of the control group, which was about 100 hours.
  • (4) The present results provide no evidence for a clear morphological substrate for electrotonic transmission in the somatic efferent portion of the primate oculomotor nucleus.
  • (5) The cis isomer was retained longer in liver, particularly in mitochondria, but had low retention in that portion of the endoplasmic reticulum isolated as the rough membrane fraction.
  • (6) The supravesical portion showed a cystic appearance with a capsule in the space of Retzius.
  • (7) In addition, lightly immunostained cells were distinguished in the caudal portion of the hypothalamic arcuate nucleus, area of tuber cinereum, retrochiasmatic area, and rostral portion of the paraventricular thalamic nucleus after colchicine treatment.
  • (8) A few free-floating cells could be observed in the lumen of this intermediate portion, most of which were macrophages.
  • (9) A 68 year-old man with a history of right thalamic hemorrhage demonstrated radiologically in the pulvinar and posterior portion of the dorsomedian nucleus developed a clinical picture of severe physical sequelae associated with major affective, behavioral and psychic disorders.
  • (10) It may, however, be useful to compare local wall dynamics in the more isometrically-contracting basal segment with those in the middle portion which brings about most of the emptying of the ventricle.
  • (11) Thus, the estrogen-sensitive phase was confined to the early portion of FPH stimulation.
  • (12) Thus it appears that a portion of the adaptation to prolonged and intense endurance training that is responsible for the higher lactate threshold in the trained state persists for a long time (greater than 85 days) after training is stopped.
  • (13) The horizontal portion of the intracavernous ICA as well as the whole aspect of the aneurysm could be exposed as a result of the extended opening of the cavernous roof anterior to the posterior clinoid process.
  • (14) Three animals received unilateral lesions which included both the inferior parietal lobule and a portion of adjacent dorsal prestriate cortex (IPL-PS).
  • (15) Heparitinase I (EC 4.2.2.8), an enzyme with specificity restricted to the heparan sulfate portion of the polysaccharide, releases fragments with the electrophoretic mobility and the structure of heparin.
  • (16) These animals spent a much greater portion of their SWS in the lighter SWS I, as compared to the control group which showed a predominance of the deeper SWS II.
  • (17) The vector is relatively small (6 kilobase pairs) and contains a portion of the L. seymouri alpha-tubulin gene positioned in-frame with a truncated neomycin phosphotransferase gene that confers resistance to the aminoglycoside G418.
  • (18) Studies using serum from mice that had been immunized with synthetic peptides from the HIV envelope region suggested that this response is directed, at least in part, at several determinants of the transmembrane portion of the HIV envelope glycoprotein.
  • (19) We propose a model in which BvgB and the N-terminal portion of BvgC are localized in the periplasm.
  • (20) We report the case of a premature infant, small for gestational age, who experienced rostral herniation of a portion of frontal lobe through the anterior fontanel as the result of a hemorrhagic cerebellar infarction followed by a large parieto-occipital intracerebral hemorrhage.