Before the development of electrophoresis to separate macromolecules, was used. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a organic extraction methods b column purification c high speed centrifugation d PCR

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]