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 with a small body and large, often colorful wings. Some gardeners plant specific flowers that attract butterflies. Butterflies are closely related to moths, which also have wings that are large in proportion to their bodies and antennae. A butterfly is distinctive because of its relatively large size and lovely, patterned wings. After hatching, they start as caterpillars, and eventually build a chrysalis, inside of which they transform into â and emerge as â a butterfly.