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».
A butterfly is a flying insect of the order Lepidoptera.  Its body is made up of a head, thorax and abdomen, and like all  insects, it has six jointed legs. It has four wingâ¦s which, together  with the six legs, are attached to the thorax.