Bird-like articular structures become more evident during theropod evolution, including postural changes and the development of a well-defined femoral neck [53], [69], [82].
After 4.5 hours, some cells arrested as large unbudded cells, while others arrested with small poorly formed buds that lacked a well-defined bud neck (Figure 2B).
Members of the breed have well-shaped heads with a straight profile, long, slim, arched necks, well-defined withers, sloping shoulders, correct leg conformation, and strong level backs with well-sprung ribs.
Second, fixing the upper and lower subdomains together introduces a well-defined allosteric pathway between the neck linker and the nucleotide cleft, so that closure of the nucleotide cleft by ATP becomes energetically coupled to docking of the neck linker.
a, b Enhanced axial CT scan and fused PET/CT scan of the neck demonstrate a well-defined, hypodense right thyroid nodule (white arrow) with high FDG uptake.
a Enhanced axial CT scan of the neck demonstrates a well-defined, hypodense right thyroid nodule (white arrow) with no internal calcifications or cervical lymphadenopathy.
a, b Enhanced axial and coronal CT scan of the neck demonstrate a well-defined hypodense right thyroid nodule (white arrows).
d Transverse colour Doppler ultrasound of the neck demonstrates a well-defined, heterogonous, predominantly hypoechoic right thyroid nodule measuring 2.7 cm, with mild increased vascularity and no internal micro-calcifications (white arrow).
b Transverse ultrasound image of the neck demonstrates a well-defined, homogenous, hypoechoic soft tissue nodule measuring 6 mm (white arrow) with no detected micro-calcifications. Biopsy showed a predominantly residual normal thyroid tissue with micro-foci of PTC Open image in new window Fig. 8 A 48-year-old male patient post total thyroidectomy with PTC recurrence.
The cells were also unable to form a normal bud neck with a well-defined constriction between the mother and daughter cell.
a, b Axial and coronal enhanced neck CT scan demonstrates well-defined homogeneous enhancing mass (white arrows) within the left parotid gland with preserved surrounding fat planes.
