Figure 7.

(Rat 1) Second-degree burn is observed in (a) characterized by the lost of epidermis (e). Proximal (prox) and distal (dist) portions appear normal with the healthy distribution of dermal (d), connective tissue elements including collagen (Co) fibers, cartilage (Ca), and bone (Bo) cellular elements. Ferrofluid particles invaded the dermis. They are surrounded by phagocytic cells in (e). Granular collagen is present in dermis (d) at lesion site of rat 1 in (f). H&E: Hematoxylin & eosin, MT: Masson’s trichrome.