The green sheen is a function on pH and is not specific for E.coli. It
can also occur with other organisms that ferment the lactose in the
medium. I have seen Klebsiella pnueumoniae strains that produce
pronounced green sheening on EMB.
Good luck in your education. I wish I would have had access to the the
'net during my years at college.
Ned Christensen
Clinical Microbiologist
Eugene, OR
