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A dye taken up by the background instead, leaving the organisms as pale outlines, is a:

AProtective stain
BNegative stain
CPositive stain
DPrimary stain
Answer & Solution
Correct answer: B. Negative stain
1. The cells refuse the dye. 2. A silhouette results. 3. It is a negative stain. _Source: OpenStax Microbiology, Chapter 2, How We See the Invisible World._
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