BIOD 171 Lab 9 - Notebook Unknown pathogen analysis AH09 Unknown Pathogen Analysis

BIOD 171 Lab 9 - Notebook Unknown pathogen analysis AH09 Unknown Pathogen Analysis Objective: To identify an unknown pathogen(s) based on the given assays developed during this course. Notes: • Two samples from the hospital was brought to your lab for diagnosis. After culturing the samples on LB agar plates another coworker began the analysis. However, due to an emergency your coworker has left the remaining work to you. Before leaving your coworker informs you the 2 liquid culture samples were accidentally combined before the Gram stain was started. However, the 2cultures remain separated on LB plates for future tests. o GOAL: To correctly identify the 2 pathogens. Results: • Gram (+) coccus clusters • Gram (-) bacillus rods • MacConkey plate o Culture A – no growth o Culture B – lactose fermentation is present ▪ Zone 1 – growth is apparent ▪ Zone 2- colony isolates begin to form. ▪ Zone 3 – single colony isolates.