Multiple Choice
Which symptom indicates the presence of plaque in a dental patient?
A) Presence of E. coli in the patient's mouth.
B) A bacterial culture from a patient's mouth that appears pink after Gram staining.
C) Presence of cyanobacteria in the patient's mouth.
D) A bacterial culture from the patient's mouth that appears purple after Gram staining.
E) Non-pathogenic biofilms in the patient's mouth.
Correct Answer:

Verified
Correct Answer:
Verified
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