Related Clues:
- Beginnings of ideas
- I ate crabs endlessly at sea -- they can cause illness
- Microbiology subject
- Microscopic organisms, good and bad
- Bacteria that cause an illness
- Early Earth life forms
- They're abundant on gas pump handles
- Potential health risks of tailless camel eating earth
- Seeds; microbes
- Stalin's enforcer concealed routine bugs
- Disease-causing bacteria
- They're spread by sneezing
- Pasteur discovery
- Pasteur's study
- They may be examined on slides