#micrococcus luteus

“Micrococcus luteus (ATCC strain number 49442) develops a yellow color due to production of riboflavin while growing on pyridine but not when grown on other substrates, such as succinic acid.” - via Wikimedia Commons

“Micrococcus luteus (Fleming strain) colonies on LB plate.” - via Wikimedia Commons

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Near enough inhaled the bloody bacteria, then we would have been in trouble :P

Photoaday126: Micrococcus Luteus.  This is gram positive cocci.  This slide  actually reads as both gram positive and a false gram negative.  Hence what would have been only purple actually has a pink color as well.