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. 2023 May 27;27:206. doi: 10.1186/s13054-023-04496-5

Fig. 2.

Fig. 2

A Human dermis histology demonstrating hyaluronan staining (HA, brown), vascular endothelial cell of capillaries, small arteries and veins (CD34, magenta) and lymphatic vessels (LYVE-1, teal). Note intercellular HA in epidermis and abundant HA filling interstitial space in papillary dermis. Lymphatic vessels (*) are common in papillary dermis. B Reticular dermis. Dense HA staining is seen around peri-vascular bundles and filling inter-cellular space. Lymphatics (*) are much less common in reticular dermis. E = epidermis, PD = papillary dermis, RD = reticular dermis. Courtesy by Dr. Neil Theise and coworkers, experiments are explained in references 13 and 14