Test 4 Qs 13-25 Flashcards
Which of the following statements is TRUE?
a. For evaluation of engulfing of particles by phagocytes we need a blood smear preparing from samples May-Grunwals
b. For evaluation of engulfing of particles by phagocytes we need stain a blood smear preparing from samples by Pappenheim
c. For evaluation of engulfing of particles by phagocytes we need stain a blood smear preparing from samples by Giemsa-Romanovsky
d. For evaluation of engulfing particles by phagocytes we don’t need to stain a blood smear preparing from samples.
b. For evaluation of engulfing of particles by phagocytes we need stain a blood smear preparing from samples by Pappenheim.
Phagocytic activity we may calculate as?
% of phagocytic cells in samples
The index of phagocytic activity we may calculate as ?
Average number of particles per one phagocytic cell
which of the following statements is FALSE?
a. Respiratory burst is a metabolic process resulting in accumulation of substance that are important for killing of engulfed bacteria.
b. Respiratory burst is a metabolic process which is activated after antigen to the surface of phagocytes.
c. During respiratory burst are at fyrst activated membrane-bound oxidase that activate the reduction of oxygen to superoxide anion.
d. The toxic substances which are generated during respiratory burst are the same in neutrophils as in monocytes / macrophages.
d. The toxic substances which are generated during respiratory burst are the same in neutrophils as in monocytes / macrophages.
For testing of respiratory burst we may use?
Only suspension of isolated leukocytes
Which of the following statements is FALSE?
a. As antigen for testing respiratory burst we may use different particles (bacteria or artificial particles).
b. As antigen for testing of engulfing we may use different particles (bacteria or artificial particles).
c. As antigen for testing of bactericidal activity we may use only live bacteria.
d. If we use live bacteria for testing of phagocytic activity, we may determinate one step the engulfing and killing of these bacteria.
a. As antigen for testing respiratory burst we may use different particles (bacteria or artificial particles).
The index of metabolic activity we may calculate as?
Number, which we obtain after dividing the absorbance of stimulated cells with the absorbance of non-stimulated cells.
The index of metabolic activity must be?
The number <2
Which of the following statements is TRUE?
a. For bacterial activity are important toxic molecules and substance that are accumulated in granules of activated phagocytes.
b. Some pathogenic bacteria may survive in phagocytes (in phagosome or cytoplasm).
c. The bacterial activity of phagocytes is connected with respiratory burst.
d. All of the above
d. All of the above
Which of the following statements is true?
a. For testing of bacterial activity of phagocytes we need incubate the all blood with suspension of living bacteria.
b. For testing of bacterial activity of phagocytes we need incubate the suspension of WBC’s with suspension of living bacteria.
c. The initial number of living bacteria in the mixture for testing of bactericidal activity is not NB.
d. The number of living bacteria in the mixture for testing of bactericidal activity we may estimate by Burker chamber.
a. For testing of bacterial activity of phagocytes we need incubate the all blood with suspension of living bacteria.
Which of the following statements is False?
a. The precentage of surviving bacteria in bactericidal test must lower than 20% (in test tube with proportion of WBCs to bacteria 1:1-2).
b. The precentage of surviving bacteria in bactericidal test must lower than 60% (in test tube with peoportion of WBCs to bacteria 1:1-2).
c. The precentage of surviving bacteria in bactericidal test is never 0% ( is not important the proportion of WBCs to bacteria)
d. We cannot determinate precentage of surviving bacteria only precentage of dead bacteria.
d. We cannot determinate precentage of surviving bacteria only precentage of dead bacteria.
In proliferation test we want determinate :
Activation and proliferation of all mononuclear cells.
Which of the following statements is FALSE:
a. Mitogens are substances that non-specifically induce DNA synthesis and cell division.
b. Mitogens are substances that specifically induce DNA synthesis and cell division.
c. Mitogens are a super-antigens.
d. Mitogens are substances that polyclonal activators.
c. Mitogens are a super-antigens.
