(n.) A part, or character, performed by an actor in a drama; hence, a part of function taken or assumed by any one; as, he has now taken the role of philanthropist.
Example Sentences:
(1) The role of the family practitioner in antenatal care is discussed.
(2) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
(3) These results demonstrate that increased availability of galactose, a high-affinity substrate for the enzyme, leads to increased aldose reductase messenger RNA, which suggests a role for aldose reductase in sugar metabolism in the lens.
(4) In this study, the role of psychological make-up was assessed as a risk factor in the etiology of vasospasm in variant angina (VA) using the Cornell Medical Index (CMI).
(5) The role of Ca2+ in cell agglutination may be either to activate the cell-surface dextran receptor or to form specific intercellular Ca2+ bridges.
(6) The role of whole Mycobacteria, mycobacterial cell walls and waxes D as immunostimulants was well established many years ago.
(7) We have investigated a physiological role of endogenous insulin on exocrine pancreatic secretion stimulated by a liquid meal as well as exogenous secretin and cholecystokinin octapeptide (CCK-8) in conscious rats.
(8) The data indicate that ebselen is likely to be useful in the therapy of inflammatory conditions in which reactive oxygen species, such as peroxides, play an aetiological role.
(9) We have examined the insertion of bovine 17 alpha-hydroxylase (P45017 alpha) into the endoplasmic reticulum of COS 1 cells to evaluate the functional role of its hydrophobic amino-terminal sequence and membrane insertion.
(10) Although solely nociresponsive neurons are clearly likely to fill a role in the processing and signalling of pain in the conscious central nervous system, the way in which such useful specificity could be conveyed by multireceptive neurons is difficult to appreciate.
(11) gamma-Aminobutyric acid (GABA) and glutamate release from the treated side was higher than the control value during the first 2-3 h, a result indicating an important role of glial cells in the inactivation of released transmitter.
(12) Although antihistamines are widely used for symptomatic treatment of seasonal (allergic) rhinitis, the role of histamines in the pathogenesis of infectious rhinitis is not clear.
(13) Because many wnt genes are also expressed in the lung, we have examined whether the wnt family member wnt-2 (irp) plays a role in lung development.
(14) As prolongation of the action potential by TEA facilitates preferentially the hormone release evoked by low (ineffective) frequencies, it is suggested that a frequency-dependent broadening of action potentials which reportedly occurs on neurosecretory neurones may play an important role in the frequency-dependent facilitation of hormone release from the rat neurohypophysis.
(15) The role of O2 free radicals in the reduction of sarcolemmal Na+-K+-ATPase, which occurs during reperfusion of ischemic heart, was examined in isolated guinea pig heart using exogenous scavengers of O2 radicals and an inhibitor of xanthine oxidase.
(16) A possible role for mitochondria in myocardial adenosine production is discussed.
(17) Further studies are required to elucidate specific roles of the steroid-induced proteins in the effects of glucocorticoids on HTM and HS cells.
(18) 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.
(19) The manufacturers, British Aerospace describe it as a "single-seat, radar equipped, lightweight, multi-role combat aircraft, providing comprehensive air defence and ground attack capability".
(20) The presently available data allow us to draw the following conclusions: 1) G proteins play a mediatory role in the transmission of the signal(s) generated upon receptor occupancy that leads to the observed cytoskeletal changes.
Understudy
Definition:
(v. t. & i.) To study, as another actor's part, in order to be his substitute in an emergency; to study another actor's part.
(n.) One who studies another's part with a view to assuming it in an emergency.
Example Sentences:
(1) Michael Caine was his understudy for the 1959 play The Long and the Short and the Tall at the Royal Court Theatre.
(2) So I think he’s been aware of it.” Shaw’s injury explains why Danny Rose of Tottenham Hotspur has been called up as an understudy for Leighton Baines in the left-back role , at a time when Kieran Gibbs is also unavailable because of his own hamstring injury.
(3) The population understudy was composed of 156 children, with ages ranging from 1 to 14 years; they were stratified in three socio-environmental groups (white-family unit, gypsy-family unit and orphanage), and also divided into subgroups according to age.
(4) Chelsea have completed the £8m purchase of Asmir Begovic from Stoke City with the Bosnia international replacing Petr Cech as Thibaut Courtois’ understudy at Stamford Bridge.
(5) The move to sign the 33-year-old on a free transfer follows a knee injury suffered by Thibaut Courtois which has ruled the first-choice goalkeeper out until December and left the squad with only one experienced understudy in Asmir Begovic.
(6) His understudy Jeremy Northam completed the run and Day-Lewis didn't act at all for several years afterwards.
(7) Buffon's understudy Marchetti gets down brilliantly to smother the cross.
(8) O'Toole's understudy, who never had to appear, was Michael Caine.
(9) The Spaniard, who can operate anywhere up the left flank but is predominantly a defender, has been capped nine times since 2009 and has acted as understudy to Joan Capdevila and, more recently, Jordi Alba.
(10) But the problem – although in some ways a nice one – is that Nicholas Hytner has become the directorial equivalent of an actor whom people fear understudying because of the risk of disappointing the audience.
(11) Pediatricians can promote and direct a national focus on this area that has been understudied by researchers, public health officials, and policymakers.
(12) They just talk to other men.” Eventually she had collared the “understudy engineer” who traced a finger down a map, and declared: “You’re about 200 metres away from the station.” That was the end of the conversation.
(13) He and a friend came close to starting a theatre afterwards, but when their funding fell through, he ended up understudying a comedian who was playing opposite Kenneth Williams .
(14) Halfway through rehearsals, though, his actors are questioning the idea that they are delivering the words of Shakespeare's understudy: Ibsen is prone to scenes and speeches of bald exposition.
(15) Ian had just exploded into stardom with his Richard II and Edward II so I was thrilled to be asked to play the First Player and the Player King, a couple of smaller roles and to understudy Claudius for a 13-14 week tour.
(16) Courtois, who faced Chelsea in the Champions League semi-finals , making some crucial saves, appreciates the difficulties if he were to return to Stamford Bridge and play understudy to Petr Cech, the 32-year-old named in the Professional Footballers’ Association Premier League team of the year.
(17) Caballero’s selection had been risky after his erratic performances as Joe Hart’s understudy but it was his goalkeeping that meant the first silverware of the season would be heading to Manchester and those were the moments when we saw why Manuel Pellegrini had placed his trust in him.
(18) Uggie was yanked; an understudy, Dash, was brought in.
(19) He was a gent, I could only mumble some nonsense about smelling the flowers.” Also notable in the picture is the understudy for goalkeeper Ivan Katalinic, George and Mildred Roper’s next door neighbour, Jeffrey Fourmile .
(20) Young, Lingard and Rashford look to be understudies to Martial, Mkhitaryan and Ibrahimovic.