I began my little speech with ¡Hola! (That was a safe start.) I proceeded to introduce myself ( mi nombre es) and that I was ...

But when mixed with a little water and daubed on the skin of mice, the dye makes their skin ... tissue because the chemicals — mostly different kinds of acids and alcohols — were not safe ...

Called HuT mice for humanized telomeres, these rodents open up different kinds of studies on cellular aging in a mammal body and the various organs. “What we did was to modify the mouse gene ...