What does the term "tube dilution" refer to?
A) The amount of diluent in a tube before sample is added
B) The dilution factor of each tube in a serial dilution
C) The number of tubes used in a serial dilution
D) The total volume of diluent used in a serial dilution
B
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This type of tissue can send and receive messages
A) connective B) epithelial C) nervous D) muscle
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Biopsy of a lesion of the buccal mucosa shows epithelial cells with hyperchromatic and pleomorphic nuclei. Abnormal mitotic figures are found at all levels in the epithelium. The basement membrane is intact. This is consistent with:
a. Lichen planus b. Leukoplakia c. Squamous cell carcinoma d. Carcinoma in situ e. Focal hyperkeratosis
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