(n.) An offer of two things, one of which may be chosen, but not both; a choice between two things, so that if one is taken, the other must be left.
(n.) Either of two things or propositions offered to one's choice. Thus when two things offer a choice of one only, the two things are called alternatives.
(n.) The course of action or the thing offered in place of another.
(n.) A choice between more than two things; one of several things offered to choose among.
Example Sentences:
(1) 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.
(2) The rise of malaria despite of control measures involves several factors: the house spraying is no more accepted by a large percentage of house holders and the alternative larviciding has only a limited efficacy; the houses of American Indians have no walls to be sprayed; there is a continuous introduction of parasites by migrants.
(3) But in 2017, to borrow another phrase from across the pond, there simply is no alternative.
(4) This modulation results from repetitive, alternating bursts of excitatory and inhibitory postsynaptic potentials, which are caused at least in part by synaptic feedback to the command neurons from identified classes of neurons in the feeding network.
(5) These authors, therefore, conclude that this modified surgical approach is a viable alternative to the previously described procedures for resistant metatarsus adductus.
(6) The possibility that both IL 2 production and IL 2R expression are autonomously activated early in T cell development, before acquisition of the CD3-TcR complex, led us to study the implication of alternative pathways of activation at this ontogenic stage.
(7) This is an easy, safe, and rapid alternative for the emergent treatment of superior vena caval syndrome.
(8) Core biopsy with computed tomography (CT) or ultrasound (US) guidance may be such an alternative, particularly when a spring-loaded firing device is used.
(9) In both experiments, Gallus males were placed on a commercial feed restriction program in which measured amounts of feed are delivered on alternate days beginning at 4 weeks of age.
(10) The method used in connection with the well known autoplastic reimplantation not only presents an alternative to the traditional apicoectomy but also provides additional stabilization of the tooth by lengthing the root with cocotostabile and biocompatible A1203 ceramic.
(11) While the majority of EU member states, including the UK, do not have a direct interest in the CAR, or in taking action, the alternative is unthinkable.
(12) Many examples are given to demonstrate the applications of these programs, and special emphasis has been laid on the problem of treating a point in tissue with different doses per fraction on alternate treatment days.
(13) Initiation of the alternative pathway by the cryptococcal capsule is characterized by a lag in C3 accumulation and the appearance of a limited number of focal initiation sites which resemble those observed when the alternative pathway is activated by zymosan and nonencapsulated cryptococci.
(14) In our efforts to explore alternative treatment regimens for multidrug-resistant tumors we have examined the sensitivity of MDR tumor cell lines to lymphokine activated killer (LAK) cells.
(15) Following treatment with reserpine or alternatively with a combination of phenothiazines (Randolektil, Majeptil) a drug-induced parkinsonoid reaction was provoked in rats.
(16) Review of the records of five patients with CPSE treated with radiologic occlusion procedures showed that these are suitable alternatives to surgery.
(17) Being the decision-making agent, the rehabilitee must therefore be offered typical situational fragments of a possible educational and vocational future, intended on the one hand to inform him of occupational alternatives and, on the other, to provide initial experience.
(18) This study suggests that the BD VACUTAINER agar slant is an acceptable alternative to the Septi-Chek system for routine blood cultures.
(19) Treatment failures tend to occur early in the course of follow-up, permitting easy identification of candidates for alternative therapeutic approaches.
(20) In view of many ethical and legal problems, connected in some countries with obtaining human fetal tissue for transplantation, cross-species transplants would be an attractive alternative.
Substitution
Definition:
(n.) The act of substituting or putting one person or thing in the place of another; as, the substitution of an agent, attorney, or representative to act for one in his absense; the substitution of bank notes for gold and silver as a circulating medium.
(n.) The state of being substituted for another.
(n.) The office or authority of one acting for another; delegated authority.
(n.) The designation of a person in a will to take a devise or legacy, either on failure of a former devisee or legatee by incapacity or unwillingness to accept, or after him.
(n.) The doctrine that Christ suffered vicariously, being substituted for the sinner, and that his sufferings were expiatory.
(n.) The act or process of substituting an atom or radical for another atom or radical; metethesis; also, the state of being so substituted. See Metathesis.
Example Sentences:
(1) The process of sequence rearrangement appears to be a significant part of the evolution of the genome and may have a much greater effect on the evolution of the phenotype than sequence alteration by base substitution.
(2) In the clinical trials in which there was complete substitution of fat-modified ruminant foods for conventional ruminant products the fall in serum cholesterol was approximately 10%.
(3) To clarify the functional roles of His40, Glu58, and His92, we analyzed the consequences of several amino acid substitutions (His40Ala, His40Lys, His40Asp, Glu58Ala, Glu58Gln, and His92Gln) on the kinetics of GpC transesterification.
(4) It is concluded the decrease in cellular volume associated with substitution of serosal gluconate for Cl results in a loss of highly specific Ba2+-sensitive K+ conductance channels from the basolateral plasma membrane.
(5) The resonance Raman spectra of oxy and deoxy cobalt-substituted hemoglobin (CoHb) are reported.
(6) The most important conclusion of both conferences was that oestrogen substitution can significantly reduce the incidence of fractures in postmenopausal women.
(7) S-methyl-l-cysteine, 2-hydroxy-4-methiol butyric acid, S-adenosyl-l-methionine, and methionine peptides were the only compounds supporting growth, when substituted for methionine.
(8) This implies that the epitope(s) of NNA-PLA2 might comprise some substituted residues in the sequence of PLA2 homologues.
(9) The deletions and substitutions appear to occur in separate molecules.
(10) Combination of domain substitutions to generate the [Glu107,123]bFGF and [Arg19,Lys123,126]bFGF mutants did not show any additivity of the mutations on biological activity.
(11) N-Methoxysulphonamides showed no inhibitory activity, as predicted by the classic work of Krebs on N-substituted inhibitors.
(12) Substitution of NaCl in the extracellular medium by sucrose, LiCl, or Na2SO4 had no effect on glutamate stimulation of [3H]dopamine release; however, release was inhibited when NaCl was replaced by choline chloride or N-methyl-D-glucamine HCl.
(13) In contrast, strains carrying the substitutions Ile-30----Phe, Gly-33----Leu, Gly-58----Leu, and Lys-34----Val and the Lys-34----Val, Glu-37----Gln double substitution were found to possess a coupled phenotype similar to that of the wild type.
(14) Substitutes: Andoni Zubizarreta (Spain), Lajos Detari (Hungary), Dragan Stojkovic (Yugoslavia), Igor Belanov (USSR), Preben Elkjær Larsen (Denmark), Lars Larsson (Sweden), Alexandre Zavarov (USSR).
(15) Lipoprotein concentrations reverted to normal after substitution with thyroxine (T4) until the euthyroid state was reached.
(16) Taken together with our previous studies showing that MDMA substitutes for the phenylisopropylamine stimulant (+)amphetamine, but that neither MDE nor N-OH MDA substitute for (+)amphetamine or for the phenylisopropylamine hallucinogen 1-(2,5-dimethoxy-4-methylphenyl)-2-aminopropane (DOM), the present results [i.e., MDMA-stimulus generalization to MDE, N-OH MDA, but not to (+)amphetamine] suggest that 1) MDMA produces effects other than those that may be considered amphetamine-like, and 2) MDE and N-OH MDA are MDMA-like agents with even less of an amphetamine-like component of action than MDMA itself.
(17) TK1 showed the most restricted substrate specificity but tolerated 3'-modifications of the sugar ring and some 5-substitutions of the pyrimidine ring.
(18) Substitution of DnaK protein with that of the mutant DnaK756 protein blocks lambda P release.
(19) To selectively stain polyanionic macromolecules of growth plate cartilage and to prevent artifacts induced by aqueous fixation, proximal tibial growth plates were excised from rats, slam-frozen, and freeze-substituted in 100% methanol containing the cationic dye Alcian blue.
(20) Plasma drug concentrations, subjective self-ratings, and the digit symbol substitution test (DSST) were evaluated during 24 hours after dosage.