However, these antibiotics also proved fatal in tests involving lab mice and thus could not be put into production.

Which sounds more like lab mice than involved children, doesn't it?

As those of us who have worked with lab mice over the years know, they don't appear to make much noise unless they're upset about something.

That was the crux of the problem: They couldn't even infect a lab mouse, let alone a human volunteer.

At the time, he'd injected several lab mice with one drop each, and they were all still alive.

We are no more collaborating than a lab mouse collaborates with a medical researcher.

In one episode he got Iowa to take some lab mice from the hospital, forcing her to come and catch them.

Also, he has many lab mice, which are often seen playing in his hair.

It can be done in lab mice or some other model organism.

Max took a detour to check on the lab mice.