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.
No records survive from the time of the David's creation to shed any light on why or for whom it was created. Scholars speculate, with probable accuracy, that the work was commissioned by Cosimo de Medici, a close friend of Donatello's and a member of the wealthy art patron family of Florence.