General hospital isolation units - these provide source isolation facilities for hospital-acquired infections; they also provide facilities for protective isolation and for the screening of patients with suspected infections before admission to a general ward or transfer to a communicable diseases unit.
The David is considered a masterpiece, an ideal male form combining heroic strength and human uncertainty. It is erected in 1504 in the public plaza of Florence, the Piazza della Signoria.
It is possible that the David was conceived as a political statue before Michelangelo began to work on it. Certainly David the giant-killer had long been seen as a political figure in Florence, and images of the Biblical hero already carried political implications there.