1.   One thing that worries parents about their children becoming vegetarian is that they might lack protein.

2.   Diets lack protein.

3.   If cells lacked this protein, the virus remained outside.

4.   Tecott and his colleagues pinpointed the effects of the brain chemical by creating mutant mice that lacked the protein and ate more than normal mice.

5.   Those lacking the protein infusions continued to gain weight.

6.   One mouse strain had the normal Fas protein while the other mouse type lacked the protein.

7.   The bioengineered mice lack that protein, which some tumors need to grow.