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. 2014 Aug 7;281(1788):20140765. doi: 10.1098/rspb.2014.0765

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© 2014 The Author(s) Published by the Royal Society. All rights reserved.

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Figure 3. — (a) Immunohistochemical reaction against myosin 2 showing the late disposition of the ABDIV (black arrows) in relation to changes in the orientation of dIV in budgerigars. (b) Immunohistochemical reaction against tenascin showing the insertion of the tendon of the ABDIV (white arrows) during budgerigar development. (c) Morphology of dIV in paralysed embryos; (c′) detail of the trochlea accessoria. (d) Diagram illustrating the development of the musculoskeletal system in the budgerigar. FDL, flexor digitorum longus; EDL, extensor digitorum longus; FPDIV, flexor perforatus digiti IV. (Online version in colour. In (d), muscles are shown in red, skeleton in blue.)