1.   Then, the mice were killed and scientists counted their brain cells, looking for differences between the former littermates.

2.   But instead of merely making the mice sterile, the genetically engineered virus killed the mice by destroying their immune systems.

3.   He is declawed but still he kills mice.

4.   I was not aware of individuals who killed mice for sport or pelts.

5.   It takes only a teaspoonful to kill a mouse, Thompson said.

6.   Q. What is the best and most humane way to kill mice?

7.   The added oncogene goaded normal pancreatic cells into uncontrolled growth, going through a number of stages leading to tumors that grew until they eventually killed the mice.

8.   Then he killed these mice and shot prions from them into new mice and again got the two diseases.

9.   Those that killed people killed mice, in both cases spreading from the lungs to the brain and other organs.

10.   Use D-Con to kill the mice.