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Unformatted text preview: Name: __Deepika Kaushal ___ Section: _____916 __________ Disinfectant Homework 1. 2. At these concentrations, bleach was not very effective at all. Both cultures flourished at all levels in this experiment and, although Escherichia coli is gram negative and Staphylococcus epidermis is gram positive, no differential control based on gram type was exhibited (1,2). 3. Antibiotic E. coli mm/sensitivity S. epidermidis mm/sensitivity 25/sensitive 26/Sensitive 20/sensitive Inconclusive* Erythromycin 11/resistant 22/Intermediate Penicillin 0/resistant 40+/Sensitive Novobiocin 10/resistant 25/Sensitive Ampicillin 20/sensitive 40+/Sensitive *clearing around the disk could not be measured due to location on the plate 4. According to our experiment, E. coli showed sensitivity to , and ampicillin. E. coli also showed resistance to the other three antibiotics, erythromycin, penicillin and novobiocin. S. epidermidis was clearly sensitive to all antibiotics used except erythromycin, and novobiocin....
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This note was uploaded on 12/07/2011 for the course BIOL 351 taught by Professor Sig during the Fall '08 term at Texas A&M.
- Fall '08