Chapter 18 Flashcards Preview

Microbiology > Chapter 18 > Flashcards

Flashcards in Chapter 18 Deck (21):
0

Inoculation if smallpox into skin with a needle

Variolaton

1

Suspension of living organisms or fractions of organisms or inactivated bacterial toxins that are used to induce active immunity

Vaccination

2

Use living but weakened microbs (MMR)

Attenuated vaccines

3

Hep-B
Use antigenic fragments if produced through genetic engineering

Sub unit vaccines

4

Sensitivity of a diagnostic test is determined by the percentage of positive samples it correctly detects and free specificity is determined by the percentage of false positives it gives

Diagnostic immunity

5

Use antibodies linked to an enzyme

Antigen-antibody reactions are detected by enzyme activity. If indicator enzyme is present in test well, an antigen antibody reaction has occurred

ELISA

6

Used to detect antigens against a specific antibody bound to a test well

Direct ELISA

7

Used to detect antibodies against an antigen bound in a test well

Indirect ELISA

8

Technique can identify microorganisms in a clinical sample and detect the presence of a specific antibody in serum

Fluorescent antibody techniques

9

Used to identify specific microorganisms

Direct FA

10

Are used to demonstrate the presence of antibodies in serum

Indirect FA

11

Serological test based on the depletion of fixed ambling of complement In the presence of an antigen-antibody reaction
1. Complement fixation.
2. Indicator stage
Positive reaction no hemolysis

Complement Fixation.

12

Eliminate the harmful Effect of a virus or exotoxin by a specific antibody

Neutralization

13

Antibody produced in response to a bacterial exotoxin or a toxoid that neutralizes the exotoxin

Antitoxin

14

Antibodies against a virus can be detected by antibodys ability to prevent cytopathic effects of viruses in cell culture

Virus neutralization test

15

Reaction using RBC

used in blood typing the diagnosis of certain disease and identification of viruses

Hem agglutination

16

Involves the clumping together of insoluble molecules

Involve particular antigens and antibodies

Agglutination

17

On a cell

Direct agglutination

18

Attached to latex spheres

Indirect agglutination

19

Involve interaction of soluble antigens with IgG or IgM antibodies

Formation if precipitation reactions lattices

Precipitation reactions

20

Studies serum and immune response that are evident in the serum

Direct test: detect antigens from patient sample

Indirect test: detect antibodies in patient serum

Serological test