Histological images from the major organs of the rhesus macaques three months after intravenous injection of the QD formulation. In each pair, the left image is from the control animal and the right image is from a treated animal. Tissues were collected from brain (a), heart (b), liver (c), spleen (d), lung (e), kidney (f), lymph (g), intestine (h) and skin (i). Images were taken at ×40 magnification. Reprinted with permission from ref. [259].