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In the Gram film above two different types of cell can be seen; one round and one rod-shaped. The coccus is Gram-positive, the bacillus is Gram-negative. Thus, this film contains both Gram-positive and Gram-negative bacteria of different shapes.
The Gram-positive cocci form short chains. In the film below the chain simply comprises two cells. The cells also appear to be squashed slightly:
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The Gram-negative bacilli show no particular arrangement:
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