問題一覧
1
1.Floculation test for syphilis detect the presence of:
reagin ab
2
2. MHC class III genes code for
complement
3
3. Ab class & ab subclass are determined by major physiochemical differences & antigenic variation found primarily in the
constant region of heavy chain
4
4. A serological test for syphilis that depends upon the detection of cardiolipin-lecithin-cholesterol ag is:
RPR
5
5. A heterophile antigen is best described as?
existing in an unrelated animal
6
6. In skin test, a wheal & flare development is:
immediate hypersensitivity
7
7. Rheumatoid factors are immunoglobulins with specificity for allotypic determinants located on the:
Fc fragment of IgG
8
8. Immunoglobulin idiotypic diversity is explained by
germ line recombination
9
9.the ff pattern of aggln was observed in ab titration: This set of reactions most likely resulted from:
prozoning
10
10. Bone marrow transplant donors & their recipients must be matched for which antigen system(s)?
HLA
11
11.20nm spheres & filamentous structures of HBV
circulating aggregates of HBsAg
12
12. Antihistamines like Benadryl:
block H1 histamine receptors
13
13. Multiplex bead assays for the detection of cytokines are efficient quantifiers of numerous cytokines at one time. One complication of such testing is:
the short half-life of certain cytokines
14
14.Blood is drawn from a px for a serological test for a viral dse shortly after the time of onset & again 4wks later. The results of the test are considered diagnostic if:
2nd ab titer is at least 4X the 1st
15
15. The best mtd to detect infections due to rubella, Epstein-Barr & HIV is:
ab detection by EIA
16
16. Immunodeficiency w/ thrombocytopenia & eczema is often referred to as:
Wiskott-Aldrich syndrome
17
17. T lymphocytes that possess the CD8 surface marker mediate which of the ff T cell functions?
cytotoxic
18
18. MHC class I includes which peptides / proteins?
HLA A, B, C
19
19.The ag marker most closely asso w/ transmissibility of HBV infection is:
HBeAg
20
20.Ab directed at native DNA are most frequently asso w/ w/c pattern of fluorescence in the IFA-ANA test?
rim
21
21. The visible serological rxn between soluble ag & its specific ab is:
precipitation
22
22. The hyperviscosity syndrome is most likely to be seen in monoclonal dse of which of the ff IG classes?
IgM
23
23.w/c lab technique most frequently use to diagnos & follow the course of therapy of px w/ 2ndary syphilis?
flocculation
24
25. The ff cold agglutinin titer results are observed:
(+) 1:128
25
26. On a follow-up visit to her dr, a young woman was given the results of her FTA-ABS test. She had been symptomatic for a couple months b4 this visit, w/ fever swollen cervical lymph nodes, fatigue,& rash affecting the palms of her hands & the soles of her feet,but she was now feeling better.Earlier test strategies that u would expect the dr. to have requested include all of the ff EXCEPT:
RAST
26
27. IL-4 can stimulate B cells to produce IgE, a major contributor to:
Type I hypersensitivity
27
28. A px abnormal lymphocytes are CD2(+)ag, lack C3 receptors,& are surface IG(-) This can be classified as a disorder of:
T cells
28
29.ratio of kappa to lambda light chain producing cells in normal individuals
2:1
29
30. IMMUNOlogic mtd utilized in the FLOW cytometer?
immunofluorescence
30
31. In indirect ELISA mtd designed to detect ab to the rubella virus in px serum the conjugate used should be:
anti-human IgG conjugated to an enzyme
31
32. Incompatibility by which of the ff procedures is an absolute contraindication to allotransplantation?
ABO grouping
32
33.The enzyme cntrl tube in ASO hemolytic assay exhibits no cell lysis.What is the most likely explanation
reduction of the enzyme
33
34. The strength of a visible reaction is known as:
avidity
34
35. The APR that has the fastest response time & can rise 100X is?
CRP
35
36. procedure has been routinely used for detection of HBsAg because of its high level of sensitivity:
ELISA
36
37. The kEy Structural difference that distinguishes immunoglobulin subclasses is the:
the sequence of the constant regions
37
38. W/c of the ff is most useful in establishing a diagnosis in convalescence phase of a viral infection?
serological techniques
38
39. the test results above,it can be concluded that px #3 has:
acute hepatitis B
39
40. The J-chain is asso w/ w/c of the ff IG?
IgA
40
41. Chronic transplant rejection is a cell mediated & humoral immune response that involves all the ff EXCEPT:
antibodies to MHC antigens on white cells
41
42. serological test that can be modified to selectively detect only specific IgM ab in untreated serum is:
enzyme immunoassay
42
43. Sera to be tested for IFA-ANA 6days after drawing is best stored at:
5C+2C
43
44. The most commonly used serological indicator of recent streptococcal infection is the antibody to:
Streptolysin O
44
45. The primary advantage of the labeled immunoassays compared to unlabeled immunoassays is:
sensitivity
45
46. SLE px often have which of the ff test results?
high titer of DNA ab
46
47.Mantoux skin test to identify infxn w/ M. tuberculosis
a cell-mediated response
47
48. The assembly of the complement "membrane attack unit" is initiated with the binding of:
C5
48
49. A suspected anthrax lesion was submitted to the lab for preparation and testing. The test of choice
direct immunoassay
49
50. C3b and Fc receptors are present on:
B lymphocytes & monocytes
50
51. Hep B, a dse arising from a DNA virus, is diagnosed in its acute phase via serology for HBsAg, HBeAg, IgM alpha-HBC and total alpha-HBc. Once a px reaches chronic HBV infxn, effectiveness of therapy may be evaluated using:
HBV DNA testing w/ real time PCR
51
52. The area of the IG molecule referred to as the hinge region is located between which domains?
CH1&CH2
52
53. Biological false(+)VDRL rxn are frequently encountered in px with:
lupus erythematosus
53
54. Anti-glomerular basement membrane antibody is most often associated with this condition:
Goodpasteur syndrome
54
55. Which of the ff is an important marker for the presence of immature B cells in px with ALL?
TdT
55
56. Initiation of the activation mechanism of the alternative complement pathway differs from that of the classical pathway in that:
ag-ab complexes containing IgA or IgE may initiate activation
56
57. Soluble immune complexes r formed under the condition of:
ag excess
57
58. A haptenic determinant will react with:
ab but not T cells
58
59. Components of the complement system most likely to coat a cell are:
C1 & C2
59
60. A px returns from a camping trip, where he vacationed for several days in a tick-endemic environment.1month after his return home, he visited his health care provider w/ complaints of fatigue, numbness & history of rash surrounding an insect bite that occurred immediately on his return home from vacation. Suspecting Lyme disease, his clinician ordered an ELISA to test for Lyme ab, results of w/c were equivocal on 2 diff tests. His health care provider then ordered follow-up testing with:
Western blot
60
61.W/c of the ff complement components is a strong chemotactic factor as well as a strong anaphylatoxin?
C5a
61
62. W/c of the ff is the most common humoral immune deficiency dse?
selective IgA deficiency
62
63. The technologist observes apparent homogenous staining of nucleus of interphase cells while performing an IFA-ANA, as well as staining of the chromosomes in mitotic cells. This results is:
expected for anti-DNA ab
63
64.W/c of the ff is an organ specific autoimmune dse
Addison disease
64
65. A single, reliable screening test for detecting neonatal infection in the absence of clinical signs is:
quantitative serum IgM
65
66. Cells from a px w/ hairy cell leukemia have immunologic and functional features of:
B lymphocytes & monocytes
66
67. Cytokines involved in innate immune regulation include all but:
IL-3
67
68. Macrophages are characterized by:
surface rece[tprs for C3b complement
68
69.HLA-B8 ag has been asso w/ w/c of ff pairs of dse
myasthenia gravis & celiac dse
69
70.W/c test is used to evaluate cellular immune system in a px?
skin test for commonly encountered ag
70
71.A px w/ B cell deficIeNCy will most likely exhibit:
inc bacterial infections
71
72. W/c of the ff is released during T cell activation?
cytokines
72
73.Anti-phospholipid ab asso w/ autoimune disorders tend to have IG that belongs to w/c subclasses?
IgG2 & IgG4
73
74. A 16yo boy w/ infectious mononucleosis has a cold agglutinin titer of 1:2000. An important consideration of this antibody's clinical relevance is the:
thermal range
74
75. Which of the ff is most likely to activate the alternative patHway of complement activation?
haptens
75
76. The IIF staining pattern on ethanol-fixed leukocytes slides shows a perinuclear or nuclear staining pattern. This pattern is typically due to:
P-ANCA
76
77.The result of an ANA test was a titer of 1:320 w/ a peripheral pattern.W/c of the ff sets of results best correlate w/ these results?
anti-dsDNA titer 1:80, & a high titer of ab to Sm
77
78.W/c of the ff has been asso w/ px who have homozygous C3 deficiency?
a lifelong history of life-threatening infections
78
79. Hereditary angioedema is characterized by:
dec activity of C1 esterase inhibitor
79
80. The Mantoux test for M. tuberculosis is based on
Type 4 hypersensitivity rxn
80
81. The profile that matches the typical test profile for chronic active hepatitis due to hepatitis B virus is:
profile a
81
82.RheuMatoid factor is most often of w/c of the ff classes:
IgM
82
83.A (+)ANA w/ pattern of anti-centromere ab is most frequently seen in px with:
CREST syndrome
83
84. Which of the ff activities is associated with C3b?
opsonization
84
85. A DPT vaccination is an example of:
active humoral-mediated immunity
85
86.W/c of the ff IG is the most efficient at aggln?
IgM
86
87. Antibody allotype is determined by the:
constant regions of heavy & light chain
87
88. Substances that are antigenic only when coupled to a protein carrier are:
haptens
88
89. A substrate is first exposed to a px serum, then after washing, anti-human immunoglobulin labeled with a fluorochrome is added. The procedure described is:
indirect fluorescence
89
90. Methods of target amPlification in molecular testing include all but:
primer amplification
90
91. The procedure for compatibility testing in organ transplant medicine is very similar for the donor & the recipient. One additional procedure that the recipient must undergo that is not relevant to the donor testing is:
anti-HLA ab testing
91
92. In hybridoma technology, the desirable fused cell
myeloma-lymphocyte hybrid
92
93. Immunoassays are based on the principle of:
antibody recognition of homologous antigen
93
94. Antibody idiotype is dictated by the:
variable regions of heavy & light chain
94
95. PCR is extremely sensitive, but testing is often complicated by:
contamination of samples yielding false(+) results
95
96.W/c of the ff is the larger residual split portion of C3?
C3b
96
97. Polyclonal B cell activation:
can induce autoantibody prodn
97
98. Tumor-asso transplantation ag are not found in:
bacterial cells
98
99. For the diagnosis of late latent or tertiary syphilis, the most appropriate assay is:
FTA-ABS
99
100. What kind of ag-ab rxn would be expected if soluble antigen is added to homologous antibody?
precipitation