1. A stool specimen was received in the laboratory. The specimen was from a 5 year old girl who has a severe abdominal cramping and fever. It was plated onto a routine media (MacConkey, Hektoen enteric agar ) and it was incubated at 35 C. After 24 hours, gram stain shows curved gram-negative bacilli. The following observation are made after 24 hours: Mac Conkey agar : lactose positive colony Hektoen agar : salmon color colonies a. What additional agar plates should be inoculated based on the information given? What is the morphology look like on the selective agar? (10) What environment conditions are needed for incubation? How long do you have to incubate the agar (10 pts) b. Which biochemical test will help you identify the organism? Name at least two biochemical test. What organism do you suspect? (15 pts) c. What may be the source of the infection? Explain our answer.(15 pts)