The negative control is formed to make the reference without the test variable. Thus, the given statements are true.
In an experiment to analyze the change with a variable, there is the presence of the test having the absence of variable. The test without the variable is termed the negative control.
The antibody is the test variable, and thereby the negative control is formed without the presence of the antibody and did not form the precipitate. Thus, the given statements are true.
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