1. But the female mice instead died, as did many of those vaccinated to resist mousepox. 2. But using the donor cumulus cell from a female mouse ovary, the scientists succeeded. 3. Cronin has already grown fat and breast tissues in female mice by implanting the chamber into their groin fat pad. 4. Female mice mature quicker when exposed to male pheromones, and females will suppress their own reproductive cycles when their cages become too crowded. 5. Female mice lacking the nitric oxide synthase gene are not unusually aggressive toward one another, the scientists reported. 6. Interestingly, female mice lacking the ability to make NO were not abnormally aggressive. 7. Newbold reported last year that granddaughters of treated female mice have significantly higher-than-normal incidence of vaginal cancer. 8. Not only did the mice that lacked NO savagely and obsessively attack normal mice, but they persistently tried to copulate with female mice despite their protestations. 9. Snyder said that was because female mice were not normally combative toward other females, and therefore did not have the behavior to become unhinged. 10. Similarly, female mice lacking the gene who actually became pregnant and gave birth tended to be derelict mothers. |