Answer:
Maybe from SulfHb (you can look about what it is about) but I wouldnt be to sure, I would reccomend if youre worried to check by a doctor :)
Explanation:
That type of discoloration is usually caused by sulfhaemoglobinaemia, which occurs when sulfur atoms get into the oxygen-carrying hemoglobin protein in blood....so talking to your doctor would be a good idea.
Cardiac and stratified
Those are the different types of epithelial tissue.
