Figure 5
Fragments of the wound surface after PDT with the use of the photoditazine –chitosan complex (a), photoditazine – PVP complex (b), photoditazine – PVP-chitosan complex (c). (a) Group IV, day 4. Immature granulation tissue1, covered with fibrinogenous-leukocytic layer2. Arrows point to accumulations of erythrocytes between them. Hematoxylin-eosin stain, ×200. (b) Group V, day 4. 1 – Very thin fibrinogenous-leukocytic layer. Maturing granulation tissue with foci of diapedetic hemorrhages. 2 – Numerous mast cells with degranulation around the blood vessels. Hematoxylin-eosin stain, ×400. (c) Group VI, day 4. 1 – Continuous and thick layer of maturing granulation tissue. 2 – Fragments of fatty tissue. Hematoxylin-eosin stain, ×100.
