2 Flashcards
What is the principle of ELISA test:
Detects the presence of antigens in biological samples, relies on antibodies to detect a target antigen using highly specific Ab-Ag interactions
What is the cytopathic effect in cell cultures:
a) mutation of the cells
b) any changes of the cells after viral infection
c) destruction of the cells
** b) any changes of the cells after viral infection **
In complement fixation test positive result is:
a) hemolysis
b) no hemolysis
** b) no hemolysis **
What are stages of infectious process:
- Incubation = from time of exposure to clinical signs
- Prodromal = unspecific signs of infection
- Manifestation = specific clinical signs
- Remission = recovery or death
What are objects of study in epizootiology:
It is the study of diseases and how antibody + antigen work
For protection against infectious diseases, reduce, eliminate and eradicate diseases
Forms of infectious diseases according to clinical signs manifestation:
Manifestation
* Apparent
* Abortive
* Inapparent
* Latent
Duration:
* Peracute = less than 2 days, vey short time
* Acute = 2-14 days
* Subacute = more than 14 days up to a month
* Subchronic = few months
* Chronic = many months
Hyperimmune serum application is:
a) natural active immunisation
b) natural passive immunisation
c) artificial passive immunisation
** c) artificial passive immunization **
What is basic characteristics of DNA polymerase in PCR:
a) thermostability
b) thermolability
c) not important for PCR
a) thermostability
Half time of maternal antibodies is:
a) period in which 50% of antibody is declined
b) concentration of antibodies providing 50% protection of young
** a) period in which 50% of antibody is declined **
Give an example of biological immunomodulators:
- Bacteria
- Extracts of bacteria or fungi
- Vitamins
