In order to establish the level of antidiphtheritic

107. In order to establish the level of antidiphtheritic immunity in a child it was decided to use a
passive hemagglutination test. This task can be completed by the sensibilization of erythrocytes by:
A. Diphtheria anatoxin B. Diphtheria antitoxin
C. Diphtheria bacillus antigens D. Antidiphtheric serum E. -
108. At a bacteriological laboratory animal skins are analyzed by means of Ascoli precipitaion test.
What is detected if the reaction is positive?
109. The person was selling "homemade pork" sausages on the market. State sanitary inspector
suspected falcification of the sausages. With help of what serological immune reaction can food substance
be identified?
110. A forensic laboratory received clothes of a citizen, who a day before was reported missing. The
clothes were found in a shed, there are red stains identified as blood by an expert. What reaction should be
performed to determine whether these red stains are dried human blood?
111. In order to determine toxigenicity of diphtheria bacilli a strip of filter paper impregnated with
antitoxic diphtheria serum was put on the dense nutrient medium. There were also inoculated a microbial
culture under examination and a strain that is known to be toxigenic. If the microbial culture under
examination produces exotoxin, this will result in formation of:
A. Precipitin lines B. Haemolysis zones
C. Zones of diffuse opacification
D. Zones of lecithovitellinous activity E. Precipitin ring
112. In order to estimate toxogenicity of diphtheria agents obtained from patients the cultures were
inoculated on Petri dish with nutrient agar on either side of a filter paper strip that was put into the center
and moistened with antidiphtheric antitoxic serum. After incubation of inoculations in agar the strip-like
areas of medium turbidity were found between separate cultures and the strip of filter paper. What
immunological reaction was conducted?