In using the checklist, investigators should select the items that apply to their types of studies. It is unlikely that any protocol would include every item on the checklist. A number of studies are conducted at CDC that are not classified as research or do not involve humans beings as participants.
d'OrÂ·say. Use d'Orsay in a sentence. noun. A shoe having an upper part that is cut away at the instep to reveal the arch of the foot. Origin of d'Orsay.
Mule (shoe) Mule, a French word, is a style of shoe that is backless and often closed-toed. Mules can be any heel height - from flat to high. The style is predominantly (but not exclusively) worn by women. The term derives from the Ancient Roman mulleus calceus a red or purple shoe worn by the three highest magistrates, although there is little indication of any structural resemblance.