| A | B |
| Rickettsiae | Small gram-negative fastidious bacteria that are obligate intracellular parasites and are responsible for diseases such as Rocky Mountain spotted fever and typhus. |
| Rocky Mountain spotted fever (RMSF) | A disease caused by infection with R. rickettsii. |
| Typhus | Diseases characterized by fever, rash, and a cough caused by Rickettsiae bacteria. |
| Mycoplasma pneumoniae | A small gram-negative bacterium that lacks a cell wall and is the cause of upper respiratory infections. |
| Helicobacter pylori | A gram-negative spiral bacterium that is a major cause of gastric and duodenal ulcers. |
| MALDI-TOF | Matrix-associated laser desorption ionization time-of-flight mass spectrometry, a technique used to analyze proteins to identify a substance or microorganism in a sample |
| Proteomics | The field of study that involves identification and quantification of the array of proteins present in a sample. |
| Microbiome | The collection of microorganisms that exists on the body, including bacteria, viruses, yeast, and fungi. |