“A mouse and a rat are as different as a housecat and a mountain lion,” says Bobby Corrigan, Ph.D., an urban rodentologist based in New York City. “Rats and mice are both rodents, but ...

When including the tail, a mouse normally will measure 5 to 7 inches long. In comparison, a rat can grow to 7 to 9.5 inches long, including the tail.

Rat cells were less likely to integrate into the mouse on the left, which didn’t have the genetic tweak. J. Huang et al / Cell 2024 By Laura Sanders April 25, 2024 at 11:00 am ...

A house mouse is smaller, with a body and tail that is about 5.5 to 7.5 inches (13.97 to 19.05 centimeters). It's easier to see the size difference between adult mice and adult rats; a younger rat ...

Not only could the rat cells integrate into the mouse brains, but they also restored missing functions in mice that lacked the sensory neurons for smell. Without the sense that they use to look ...