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Plates (clockwise from left):
E.coli,
(Gram positive)
S. marcenes, (Gram negative)
B.subtillus, (Gram positive)
S.aureus. (Gram
positive)
The distinct zone of inhibition was shown by organism H on all plates.
The fainter zones of inhibition shown shown by I are not as clear on S.aureus.
All of the other candidates showed inhibition on the gram negative organism
S. marcenes indicating that they were all capable of producing antibiotics.
Organism H and I attacked a broader base of organisms. |