Figure 3.

The motion of the regenerated joint after the amputation at upper arm and elbow joint (see also Movies S1−S3). (A, A′, A″) The bending−stretching motion of the intact elbow. The yellow arrowhead indicates the position of the elbow joint. (B, B′, B″) An equivalent bending−stretching motion of the elbow was also observed 70 days after stylopod amputation, and (C, C′, C″) 70 days after joint amputation. At 70 days after the amputation, the regenerated zeugopod and autopod were miniature sized compared with the intact zeugopod and autopod (square brackets).