As opposed to letting the bacteria grow in uniform conditions, for scientific purposes, he might let them grow at one temperature in an incubator, take them out, expose them and then put them back ...

Smithsonian explains: As opposed to letting the bacteria grow in uniform conditions, for scientific purposes, he might let them grow at one temperature in an incubator, take them out, expose them ...

She rubs the bacteria onto the face cast before placing it into an incubator, where the bacteria cultures can grow in a controlled environment. After around three days, you can see the little guys ...

As opposed to letting the bacteria grow in uniform conditions, for scientific purposes, he might let them grow at one temperature in an incubator, take them out, expose them and then put them back ...