Fig. 4.

Sites of desmin expression in muscles of a human fetus at 15 weeks (a different specimen from that shown in Fig. 3). (A) Sites of desmin expression are not evident along the sagittal septum of the tongue (asterisk) but are evident around the parasagittal septum (star). GH, geniohyoideus. (B) Tendon of the tensor tympani with sites of desmin expression. (C) Lateral pterygoid muscle inserts to the mandibular head. (D) Laryngeal muscle inserting to the posterolateral part of the arytenoid cartilage. (E) Origin of the supraspinatus muscle from the scapular plate. All figures were prepared at the same magnification.