Figure 3
From: Crocodylians evolved scattered multi-sensory micro-organs
Development of cutaneous sensory structures during crocodylian embryogenesis. (A) Lateral views of developing C. niloticus embryos. Embryonic days (E) post-oviposition, and corresponding Ferguson stages (FS) of development, are indicated on top. White arrowheads indicate the initiation of scale formation on the different body regions. (B) H&E staining of skin sections from different body regions (indicated on the left) of C. niloticus embryos at various developmental stages (E34 to E70). Black frames indicate the first appearance of ISOs (insets: higher magnifications). White and black arrowheads indicate the dermal and epidermal components of developing ISOs, respectively. Arrows in bottom panels mark developing lingual salt glands. Magnification bars: 100 μm.