Why is Eosin Methylene Blue both a differential mediumand a selective medium?

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Lelia LubowitzLv2

28 Sep 2019

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would removing eosin Y from methylene blue from EMB agar alter the medium sensitivity or specificity?

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would removing B-phenylethyl alcohol from PEA alter the medium sensitivity or specificity?

if you observed growth of gram-negative organisms on the PEA pate you inoculated, does this negative the usefulness of PEA as a selective medium.

goldtiger230

Escherichia coli colonies on eosin-methylene blue agar will have a characteristic green metallic sheen that other gram-negative bacteria will not have.

A. false

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We have prepared E3 medium for zebrafish embryos which consist of 34.8 g NaCl, 1.6 g KCl, 5.8 g CaCl2*2H2O,9.78g MgCl2*6H2O.
And at the end we added 3 ml 0.01% Methylene Blue. Why we need to prepare specific medium for zebrafish embryos and larva?Also what methylene blue is used for in this medium? Please give an explicit explanation for these questions.Thanks in advance.

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Why is Eosin Methylene Blue both a differential mediumand a selective medium?

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