Fig. 2
From: MR microscopy of the human fetal upper extremity – a proof-of-principle study
9-week GA specimen. Adjacent coronal T2w images of 9-week GA specimen (a, b) and photography of the corresponding specimen after in toto Alizarin stain (c). The ossification centers of the humerus (white arrow in a), ulna (black arrow in b) and radius (short black arrow in a and b) appear hypointens on MR images and purple in Alizarin in toto stain. The styloid process of the ulna (long black arrow in a) can be identified but has not retreated from the proximal carpal row