** Introduction : A medical microbiology lab performs testing on human http://write-my-college-application-essay297.mystrikingly.com/ samples collected from different body sites. The tests are used to detect and identify any microorganisms capable of causing disease. Knowing of unknown microorganism is important on how this microorganism Â works and how it is structured, means knowing how it can affect humans. The purpose of this study was to identify an unknown bacterium by applying all methods that were previously conducted and learned in the medical microbiology laboratory class. **Materials : 1) Blood agar plate . 2) Mannitol Salt agar (MSA) plate. ) DNase agar plate . 4) Novobiocin disc . 5) Inoculating loop. 6) flame ( Bunsen burner) . 7) 1N hydrochloric acid (HCl) . 8) Two slides . 9) Plasma tube. 10) 3% Hydrogen Peroxide (H2O2) . 11) One unknown plate . 12) Crystal violet. 13) Gramâ€™s iodine . 14) Safranin. 15) Alcohol . ** Methods : An unknown labeled with number 8 was given out by the lab instructor. The goal at this point was to determine unknown gram positive vacteria.