Pixivcmqz

Presumptive identification of E coli was made based on its characteristic morphology colony on the selective medium MacConkey agar Rapid lactose fermenting colonies of E coli appear dry, donut shaped and dark pink in color and are surrounded with dark pink area of precipitated bile saltsSpecimen include urine, pus, faeces, cerebrospinal fluid (Infants), and blood for culture or depending upon site of infections Ecoli is a gram negative usually motile rod A minority of strains are capsulate Escherichia coli is an aerobe and facultative anaerobe Optimum Temperature for the growth of Ecoli is 36 – 37 ºC with most strains growing over the range 18 – 44 ºCVWR) to determine the estimate stock concentration and then cells were held overnight for approximately 16 h at 4°C (Sanders, 12) The culture was then diluted to the desired CFU concentration for 13 Macconkey Agar Ideas Microbiology Medical Laboratory Microbiology Lab What color is e coli on macconkey agar