What's the difference between bystander and observer?

Bystander


Definition:

  • (n.) One who stands near; a spectator; one who has no concern with the business transacting.

Example Sentences:

  • (1) Seconds later the camera turns away as what sounds like at least 15 gunshots are fired amid bystanders’ screams.
  • (2) We initiated a program of telephone CPR (cardiopulmonary resuscitation) instruction provided by emergency dispatchers to increase the percentage of bystander-initiated CPR for out-of-hospital cardiac arrest.
  • (3) Preliminary murder charges have been lodged against two men – both students at Islamic religious schools, who were arrested at the scene after being overpowered by bystanders – and against a third assailant who fled and has yet to be found, an officer said.
  • (4) The UK is far from a neutral bystander in this conflict.
  • (5) The semi-allogeneic human conceptus therefore appears to be effectively protected from maternal complement-mediated damage arising either from alternative or classical pathway activation or in a bystander fashion following a response to microbial infection in the mother.
  • (6) The action starts in traditional Law & Order fashion, with an innocent bystander discovering a bloody body while he’s out walking his dog.
  • (7) Survival was significantly better (P less than 0.05) in the bystander-CPR group (32%) than in the delayed-CPR group (22%).
  • (8) Furthermore, this type of bystander killing of target cells could also be induced by the Ca2+ ionophore A23187.
  • (9) Joe Hart 6 A bystander throughout but that will not trouble the Manchester City man.
  • (10) Patient characteristics (sex and age), circumstances of arrest (place, whether arrest was witnessed and cardiac rhythm), citizen response (whether cardiopulmonary resuscitation [CPR] was started by a bystander, time to access to emergency medical services and time to initiation of CPR), emergency medical services response (ambulance response time, time to initiation of CPR and time to rhythm analysis with defibrillator) and survival rates.
  • (11) Bystanders and people on buses liked us; we didn't look threatening and they recognised some film and TV stars among us.
  • (12) Thus, as demonstrated for older patients, coronary artery disease is an important cause of sudden death in this age group, and bystander cardiopulmonary resuscitation and early defibrillation are important for survival.
  • (13) Canine distemper virus-immune complex-induced oligodendroglial pathology is thought to be mediated by toxic factors released from stimulated macrophages, this bystander effect demonstrated here in vitro may be relevant to the mechanisms of demyelination in vivo, in which virus persistence plays an important role.
  • (14) The thyroid appears to be an "innocent bystander" in an immune mediated antiviral attack.
  • (15) Once microbial colonisation is established, the host responds exuberantly with non-specific and immune inflammatory responses which fail to clear the microbial flora but damage the 'innocent bystander' lung.
  • (16) It is proposed that the ability of the eye to make a compromise with the immune system and thereby arrange for the selective suppression of delayed hypersensitivity results from the need to avoid intraocular inflammatory reactions that are intense and productive of nonspecific "innocent bystander" injury.
  • (17) "What hurts the most is that Europe is a bystander."
  • (18) Finally I'd always recommend bystander action - it's difficult to know how you might react as a victim, but we can all keep our eyes open and calmly step in when we see somebody else being harassed - and this kind of collective action is likely to be safer and have a big impact on changing the cultural normalisation that lets harassers think they will get away with it in the future For those who are interested, Laura has previously written a great piece for us on street harassment, which can be found here.
  • (19) The protein antigen that was taken up into the circulation appeared to be intact and thus may have an influence on the development of the immune response, or lack thereof, to this bystander antigen.
  • (20) One officer approached the bystander who had been recording and, after confirming he had captured the entire thing, told him: “I’m going to take your phone.” The footage was later obtained by a local TV news station.

Observer


Definition:

  • (n.) One who observes, or pays attention to, anything; especially, one engaged in, or trained to habits of, close and exact observation; as, an astronomical observer.
  • (n.) One who keeps any law, custom, regulation, rite, etc.; one who conforms to anything in practice.
  • (n.) One who fulfills or performs; as, an observer of his promises.
  • (n.) A sycophantic follower.

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) However, this deficit was observed only when the sample-place preceded but not when it followed the interpolated visits (second experiment).
  • (3) In conclusion, in S-rats a glucose-stimulated insulin release is accompanied by an increase in IBF, but this is not observed in P-rats.
  • (4) The combined immediate and delayed responses to fleas in the dog are as observed by other investigators in man and guinea pigs.
  • (5) However, when cross-linked to anti-CD4 or anti-CD8 antibodies a markedly enhanced proliferation of the corresponding subpopulation is observed.
  • (6) Using monoclonal antibodies directed against the plasma membrane of Madin-Darby canine kidney (MDCK) cells, we demonstrated previously that a glycoprotein with an Mr = 23,000 (gp23) had a non-polarized cell surface distribution and was observed on both the apical and basolateral membranes (Ojakian, G. K., Romain, R. E., and Herz, R. E. (1987) Am.
  • (7) Stimulation is also observed with mixtures of APC expressing DPw3 and APC expressing A1, and likewise, DPw3+ APC become stimulatory when preincubated with supernatants from A1-positive cells.
  • (8) For this reason, these observations should not be disregarded.
  • (9) No differences between the two substances were observed with respect to side effects and general tolerability.
  • (10) The testing of other models and their failure to describe the kinetic observations are discussed.
  • (11) The extrusion of granules into the intercellular space via exocytosis is frequently observed.
  • (12) The time of observation varied between 2 and 17 years.
  • (13) Insensitive variants die more slowly than wild type cells, with 10-20% cell death observed within 24 h after addition of dexamethasone.
  • (14) The subcellular distribution of sialyltransferase and its product of action, sialic acid, was investigated in the undifferentiated cells of the rat intestinal crypts and compared with the pattern observed in the differentiated cells present in the surface epithelium.
  • (15) No reaction product was observed in the lamellar areas.
  • (16) Cyanoacrylate and PDS coatings were not detectable after 6 weeks while PHBA and PLLA coatings were still observed after 48 weeks.
  • (17) A total of 13 ascertainments of folate sensitive autosomal fragile sites is observed, of which 10q23 fragility appears to be the most frequent.
  • (18) This new observation offers good possibilities to study the metabolism of tryptophan at the cellular level.
  • (19) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
  • (20) The fluctuations in [Ca2+]i measured with fura-2 were synchronized among the population of cells observed and were sensitive to extracellular Ca2+ concentration ([Ca2+]o).

Words possibly related to "bystander"