Deoxygenated blood can be a darker shade of crimson; This is certainly existing in veins, and might be found in the course of blood donation and when venous blood samples are taken. It is because the spectrum of sunshine absorbed by hemoglobin differs concerning the oxygenated and deoxygenated states.[35] https://cristianjsxbf.win-blog.com/17052118/the-2-minute-rule-for-blood-castle-mu-online