Examlex
In marine sticklebacks, the Pitx1 gene is ____, but in freshwater sticklebacks, the Pitx1 gene is ____.
Carrier
An individual or entity that transports or conveys goods or people from one place to another.
Pathogen
An organism, such as a virus, bacterium, or fungus, that causes disease in its host.
Fomite
An object or material likely to carry infection, acting as a transmitter.
Tuberculosis
A contagious bacterial infection that primarily affects the lungs but can also impact other parts of the body.
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