erythrocyte sedimentation rate (ESR), the rate at which red blood cells settle out in a tube of unclotted blood, expressed in millimeters per hour. Blood is collected in an anticoagulant and allowed to form a sediment in a calibrated glass column.
The Butterfly Circus (2009) The Butterfly Circus is the story of a renowned circus troupe traveling through the devastated American landscape at the height of the Great Depression, lifting the spirits of audiences ... See full summary Â».
Butterfly (Crazy Town song) Butterfly is a 2000 song by American rock band Crazy Town. It was released in November 2000 as the third single from their album The Gift of Game. The song reached number-one in 15 countries, including the band's native United States.