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d growth of Gram-negative organisms on the PEA plate you inoculated, does this negate the usefulness of the PEA as a selective medium? Why or why not?...
If you observed growth of Gram-negative organisms on the PEA plate you inoculated, does this negate the usefulness of the PEA as a selective medium? Why or why not? Compare the growth on the NA and the PEA plates).