The complement fixation test uses red blood cells as the target for complement activation. Test serum containing antibodies is combined with a known amount of antigen in a tube, and then the RBCs and antibodies against the RBCs are added. A positive result for the complement fixation test would be
A) loss of color in the tube.
B) a cloudy solution in the tube.
C) a line of precipitate near the bottom of the tube.
D) a solution that is clear due to precipitation of RBCs.
E) a fluorescent precipitate.

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The Answer of The complement fixation test uses red blood cells as the target for complement activation. Test serum containing antibodies is combined with a known amount of antigen in a tube, and then the RBCs and antibodies against the RBCs are added. A positive result for the complement fixation test would be
A) loss of color in the tube.
B) a cloudy solution in the tube.
C) a line of precipitate near the bottom of the tube.
D) a solution that is clear due to precipitation of RBCs.
E) a fluorescent precipitate.

The Complement Fixation Test Uses Red Blood Cells as the Target