Some felt the knockdown was real but the knockout was fake. Gene silencing is often considered the same as gene knockdown. Knockouts Knockdown 4 losing to Rosemary. Knockouts Knockdown 2 losing to Gail Kim. Myostatin levels can be temporarily reduced using a cholesterol-conjugated siRNA gene knockdown. These techniques include knockouts, floxing, gene knockdown, or genome editing using methods like CRISPR-Cas9. Knockouts Knockdown 4, where she fought Rebel in a losing effort. There are several companies that offer commercial services related to gene knockdown treatments. Off-targeting is another challenge to the use of siRNAs as a gene knockdown tool. Cotto won and scored a knockdown in the sixth round. In the second round, Tyson dropped Berbick with a quick knockdown. The referee halted the fight with the second knockdown. This provides dramatic fire knockdown, an important factor in crash rescue fire fighting. Qawi scored a knockdown in round eight. Referee Richard Steele awarded Tyson with the knockdown.