Figure 2: Skin micrographs of a canine embryo at 27 (A and B) and 32 days (C) and a 44-day-old fetus (D) showing the developmental stages of the skin. The white arrow shows the basal layer, the yellow arrow shows the intermediate layer, and the red arrow indicates the periderm. The subjacent mesenchyme (MS) is shown in both ages, and the hair follicle (HF) is only observed in the fetus. Hematoxylin and eosin (HE) staining, 40x magnification.