Fig 1. Non-invasive detection of early stage of fetuses and enhanced visualization of fetal wound tissue.

(a) Ultrasound images of embryos at days E6.5, E13.5, and E15.5 (b) corresponding color-coded images for visual enhancement of tissue density in vivo, fetal positions shown by arrows. Wound-site marked with red arrow. Scale bar = 5 mm (c) Image panel showing fetal wound healing over time. Pre-wounding and post-wounding (3, 24, and 48h) (d) corresponding color-coded images are shown. Zoomed image of wounds at 3 and 48h post-wounding are marked by dotted circles as shown. Scale bar = 500 μm, n = 3. Wound-site marked with red arrow.