What will happen to human bloof when it is left out, exposed to air?

I swear, Im a writer. Anyway, I m writing something that involves large amounts of blood involved, and I need to know what exactly will happen to, say, a bucket of blood when left unrefrigerated. (assuming it is kept inside at room temperature and not exposed to direct sunlight.) If that question can be answered,... show more I swear, Im a writer. Anyway, I m writing something that involves large amounts of blood involved, and I need to know what exactly will happen to, say, a bucket of blood when left unrefrigerated. (assuming it is kept inside at room temperature and not exposed to direct sunlight.) If that question can be answered, does similar thing happen to bloodstains/small amounts too?
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