Rosanne and two other scientists decided to block the gene for apolipoprotein B, the main component in the form of cholesterol that contributes to heart attacks.
She says they injected intravenously two differing amounts of an RNA snippet that blocks the gene that makes apolipoprotein B, a key component in cholesterol.
Piper Jaffray analyst Gene Munster concedes this morning that there could be some short-term component issues, but he thinks the impact should be limited.