However, the researchers found that identical twins had far more similar bacterial colonies in their guts than non-identical pairs, pointing to a genetic link.

Bacterial colonies grow on the infected fish's spleen and kidney, eventually leading to mortality.

When various individuals use the pump, they will leave behind a variety of bacterial colonies.

Bacterial colonies can be counted after 24 to 48 hours depending on the type of bacteria.

The rings are pressed onto bacterial colonies and then stamped onto a series of plates.