title: On the mechanism of distal twinning of the chick embryo limb bud.
mesh_terms: D000671:Amputation, Surgical; D000818:Animals; D002642:Chick Embryo / Q000254:growth & development*; D005121:Extremities / Q000254:growth & development* / Q000637:transplantation; D006225:Hand / Q000254:growth & development; D014034:Toes / Q000254:growth & development