has anyone ever heard of graham negative? It is some kind of infection?

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E.coli is a Gram Negative Rod. That is one clue to identify this bacteria. The bacteria that causes gonorrhea is a gram negative diplococci that appears intra and extracellularly and has sort of a coffee bean shape. The Staphylococcus bacteria is gram positive and often appears in clusters and the bacteria that causes Strep is gram pos and seen in chains.
Gram is the particular type of stain used so that these bacteria can be seen under a microscope. The stains uptake differentiates the types of membranes the organism has. Gram positive appear purple and gram negative appear red. There are a LOT more tests performed to definitively identify a bacterial organism besides the gram stain.

Bacteria come in several flavors.

One test that is performed upon them to determine what kind of bacteria they are is the gram stain test.

Some bacteria accept the stain and some do not get stained. That's all it tells you really. I think I heard once that gram negatives were a little more virulent, but antibiotics should still do the trick.

do you mean gram negative?
some bacteria are gram negative...
just the kind of environment they thrive in..
the bacteria is the problem

it's "gram negative" and it's just a way of differentiating among bacteria based upon whether they are stained with a specific dye or not, i suggest you search for "gram staining" at wikipedia for more info

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has anyone ever heard of graham negative? It is some kind of infection?

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