code/modules/mob/living/blood.dm 
| /proc/get_blood_type | Returns the blood_type datum that corresponds to the string id key in GLOB.blood_types |
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| /proc/get_color_from_blood_list | Returns the hex color string, or a color matrix, of a given blood_type datum given an assoc list of blood_DNA e.g. ("Unknown Blood Type", "*X") |
| /proc/has_blood_flag | Checks if any of the passed blood types have certain blood flags |