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  2. Eosin methylene blue - Wikipedia

    en.wikipedia.org/wiki/Eosin_methylene_blue

    E. coli on EMB agar. Eosin methylene blue (EMB, also known as "Levine's formulation") is a selective and differential media used for the identification of Gram-negative bacteria, [1] specifically the Enterobacteriaceae. EMB inhibits the growth of most Gram-positive bacteria. EMB is often used to confirm the presence of coliforms in a sample.

  3. Dentist-Approved At-Home Teeth Whiteners - AOL

    www.aol.com/dentist-approved-home-teeth...

    Before you start shopping for over-the-counter teeth whitening products, American Dental Association (ADA) spokesperson Matt Messina, DDS, recommends scheduling an appointment with your dentist ...

  4. Are Whitening Strips Bad for Your Teeth? Dentists Explain - AOL

    www.aol.com/whitening-strips-bad-teeth-dentists...

    Because professional teeth whitening gels are stronger, you may be able to get away with a visit to the dentist once a year, while over the counter products may require consecutive daily use per kit.

  5. Teeth whitening: What is it, how to do it safely and how to ...

    www.aol.com/lifestyle/teeth-whitening-100042380.html

    Over-the-counter whitening products Whitening strips. Teeth whitening strips are easy-to-use, peel-and-stick strips that you wear on your teeth for 15 to 30 minutes each day. ... "They have been ...

  6. Tooth whitening - Wikipedia

    en.wikipedia.org/wiki/Tooth_whitening

    Tooth whitening or tooth bleaching is the process of lightening the colour of human teeth. [1] Whitening is often desirable when teeth become yellowed over time for a number of reasons, and can be achieved by changing the intrinsic or extrinsic colour of the tooth enamel . [ 2 ]

  7. Plate count agar - Wikipedia

    en.wikipedia.org/wiki/Plate_count_agar

    Once a plate has been successfully prepared, plate count agar cells will grow into colonies which can be sufficiently isolated to determine the original cell type. The colony-forming unit (CFU) is an appropriate description of the colony's origin. In plate counts, colonies are counted, but the count is usually recorded in CFU.