Which of the following is the most satisfactory procedure for the definitive diagnosis
of malaria, trypanosomiasis and filariasis?
a. Thick and thin blood film on the same slide.
The Jaswant-Singh-Bhattacherji stain.
d. The indirect cell-count method.
The Jaswawant-Singh-Bhattacherji stain is a fairly rapid staining method for the
a. Malaria, trypanosomiasis, and filariasis.
b. Trypanosoma brucei.
d. Chagas' disease.
Knott's technique for examination of microfilariae is useful when:
a. The patient has had a microfilarial infection for a long period.
b. The patient is very young or elderly.
There are only small numbers of microfilariae present in the blood.
d. There are only certain types of microfilariae present in the patient's blood.
In performing the Knott's technique for examination of microfilariae, the solution you
prepare is supposed to be the color of port wine. You can hasten the ripening of
this solution by:
a. Placing it in a refrigerator for three to six weeks before using it.
b. Placing five to six drops of a two percent formaldehyde solution in it.
Letting the solution stand in a warm place and by shaking it occasionally.
d. Autoclaving the solution for three hours at a temperature of 100 to 109 C.