Pino Restfull painting

Pino Restfull painting
Vladimir Volegov Yellow Roses painting
We found that embryonic stem cells are unstable — the state of their genes changes a lot," explains Jaenisch. "What was surprising was despite this genetic irregulation, still some embryos developed into pups. This means that those cloned animals that reach birth or beyond may appear normal, but our research shows they're not." Sounding CautionScientists may have succeeded in cloning sheep, mice, cows, pigs and goats, but Jaenisch says this new research adds to mounting evidence that cloning remains a poorly understood science and one that is not ready to be undertaken with people. Mark Westhusin, a cloning expert at Texas A&M University in College Station, Texas, points out that problems with genetic expression — the way information in genes is manifested in the body — are difficult to detect and this makes the practice of cloning even more dangerous.