supine position on the operation table, and an incision was made in the anterior part of the neck in order to expose the trachea and insert a tracheal intubation tube. The other end of tracheal intubation was connected to a pressure sensor, a flow sensor, a ventilator, and Maclab data acquisition system (Buxco Electronics Inc., Troy, NY, U.S.A.). The tidal volume was set at 10 ml/kg, and the respiratory rate was set at 60 breaths/min. The breathing pattern of the rats was observed for a period of time, after which air was rapidly inflated into the trachea with a volume of five times the tidal volume. The ventilator was then immediately disassembled and replaced with an aspirator of negative pressure for air removal. Afterward, the forced expiratory volumeone of President Obama's applause lines in his State of the Union address, and he's repeated it frequently since. This spring, Obama plans to host a Working Families Summit at the White House to promote many of the same ideas.

And Democratic candidates aren't shy about using their gender as an asset. Alison Lundergan Grimes, the likely Democratic candidate for Senate Republican Leader Mitch McConnell's seat in Kentucky, told the Washington Post last week : "When I put ... my heels on, it's about kicking butt for the people of this state, especially the women."

Democrats have long cast themselves as champions of women's rights, especially reproductive rights. But the unabashedly woman-centric emphasis of this year's campaign is unusual, and largely based on electoral arithmetic.

Democratic strategists have calculated that if