"You want to try another one?" the mayor challenged.
In the question-and-answer session that followed, lawmakers were considerably rougher with Ms. Black than they had been with the mayor, challenging her on topics including teacher seniority and school closings.
When Ms. McCormack Jackson got up to follow Mr. Jones out of the room, she said the mayor challenged her to offer one example of how he had mistreated her.
Speaking at the end of his trip to the US, the London mayor challenged George Osborne by saying that politicians should follow his example and publish their tax returns as he did during the 2012 London mayoral contest.
When "Show Me a Hero" begins, Wasicsko, a former cop, a flirt in a thick Pacino mustache, gets picked by the Democrats to run for mayor, challenging the incumbent, who lost support over a judicial decree to build low-income housing.
Mr. DiFrancesco described the papers as "everything that I know has been requested by my opponents' opposition researchers as well as the press," without naming those rivals: Bret D. Schundler, the conservative Jersey City mayor challenging him in the Republican primary, and James E. McGreevey, the Democratic mayor of Woodbridge, who awaits in November.
The realization of thick and viable tissues equivalents in vitro is one of the mayor challenges in tissue engineering, in particular for their potential use in tissue-on-chip technology.
In March of 2013, Taveras learned that Providence Talks had won the Mayors Challenge grand prize.
The Mayors Challenge was inspired by Creative Councils, an initiative launched by innovation foundation Nesta two years ago.
