
Uporaba protiteles v diagnostiki
Authored by Marusa Ledinek
Biology
University
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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Protitelo ima 2 težki verigi, ki ju sestavljata...
ena konstantna in tri variabilne regije
dve variabilni in dve konstantni regiji
ena variabilna in tri konstantne regije
štiri variabilne in štiri konstantne regije
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kako razlikujemo poliklonska in monoklonska protitelesa?
Monoklonska
sestavlja mešanica IgG proti celotnemu antigenu, poliklonska pa en IgG proti epitopu.
Poliklonska
sestavlja mešanica antigenov proti celotnemu IgG, monoklonska pa en antigen proti epitopu
Poliklonska
sestavlja mešanica IgG proti celotnemu antigenu, monoklonska pa en IgG proti epitopu.
Monoklonska
sestavlja mešanica antigenov proti celotnemu IgG, poliklonska pa en antigen proti epitopu
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kateri imunski test je opisan spodaj?
Na trdo površino z jamicami je premazan antigen, kateremu nato dodamo serum s protitelesi, katerih prisotnost želimo preveriti. Po inkubaciji ploščico sprememo in dodamo sekundarna protitelesa označena s encimom, ki se vežejo na prej nastali kompleks antigena in primarnih protiteles. Po inkubaciji še enkrat spiramo in dodamo substrat, ki proizvede obarvan produkt.
direktna ELISA
indirektna ELISA
Western blot
indirektni encimski imunski test (iDIBA)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kako zazna mehanizem antigenskega testa LFA (lateral flow assay) aktivno okužbo s Covid-19?
Z usmerjenim tokom pacientovega vzorca čez ciljne beljakovine na ploščici.
Z inkubacijo vzorca s testnimi beljakovinami v plošči z jamicami.
Z estrakcijo in pomnoževanjem virusne DNA.
S prekinitvijo interakcije med RBD in regulatorjem sistema ACE2, ki je vstopni receptor za virus
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Zakaj jemljemo vzorec za hitri antigenski diagnostični test za Covid-19 najpogosteje iz nosnega prehoda?
ker samo na sluzničnih površinah lahko nastanejo nevtralizacijska protitelesa za RBD.
ker za hitri antigenski test potrebujemo ACE2, ki se nabira na površini sluznice.
ker se samo tam nahaja virus.
ker se virus tam najhitreje razmnožuje in tako pridobimo površinske markerje na zunanji strani virusa.
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