Blue skin.
D000818:Animals; D003094:Collagen; D003116:Color; D003118:Color Perception; D003238:Connective Tissue; D003490:Cyanosis / Q000378:metabolism; D000882:Haplorhini; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D008543:Melanins; D008544:Melanocytes; D055095:Optics and Photonics; D010858:Pigmentation; D011323:Primates; D012723:Sex; D012867:Skin; D013053:Spectrophotometry; D013653:Tattooing
D006454:Hemoglobins; D008543:Melanins; D003094:Collagen