Deck 11 Flashcards
To determine a titer of antibodies is used a … dilution of serum:
a. Any
b. Twofold (X)
c. Fivefold
d. Tenfold
Two fold
In latex agglutination:
a. Antigen is a latex particle
b. Latex particle is carrier of antibody or antigen (X)
c. Antibody is a latex particle
d. Antigen is not used at all
Latex particle is carrier of antibody or antigen
Positive reaction in tube agglutination test is:
a. Any presence of sediment at the bottom
b. The white clumping on the bottom (with shape of umbrella) and the clear
supernatant (X)
c. The white sediment on the bottom and the turbid supernatant
d. Only the turbidity is formed in the solution
The white clumping on the bottom (with shape of umbrella) and the clear supernatant
The precipitation band has the colour
White
Zone of equivalence is:
a. Place, where concentration of antigen is in balance with concentration of antibodies
(X)
b. Place, where concentration of antigen is not in balance with concentration of antibodies
c. Place where is abundance of antigens
d. Place where is abundance of antibodies
Place, where concentration of antigen is in balance with concentration of antibodies
Draw the scheme of precipitation line for
(NOTES)
Antiserum has been carefully laid over an antigen solution for example in tube. At the point of contact, a cloudy or oaque zone forms = precipitation line
- Draw the scheme of sandwich ELISA for detection of antigen
(NOTESS)
notesss
Which of the following components is for ELISA?
a. Antibody labelled with fluorescein
b. Antibody labelled with pyocianin
c. Antibody labelled with enzyme (X)
d. Antibody labelled with radioisotope
Antibody labelled with enzyme
What is the ratio – blood: H2O : 2.7 % NaCl used for lysis of erythrocytes in procedure of separation of all leucocytes from whole blood?
1:2:1
Leucocytes are counted:
a. In 50 medium squares of Burker chamber (X)
b. In all burker chamber
c. Only in one big square of Burker chamber
d. In 20 small squares of Burker chamber
In 50 medium squares of Burker chamber
