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One type of sRNA is called microRNAs.

The two other co-authors are the University of Delaware’s Jackie Silverman and Shalena Srna, who was recently a University of Michigan professor.

"We are living for this moment," Shakhtar football director and former Croatia right-back Darijo Srna told BBC's World Football podcast.

Sporting director Darijo Srna told The Associated Press this month the Shakhtar lineup would be mostly young Ukrainian players.

Shakhtar’s sporting director Darijo Srna told The Associated Press his club was “the only one in the history of football” to have endured such tests.