Fibroblasts are integral to wound healing as they are the cells responsible for laying down extracellular matrix proteins like collagen, fibrin, elastin, and more
Since your body naturally does not make vitamin B12 on its own, you will have to take it from another source like animal-based foods, pill supplements, or injections
Note that our body is not very efficient at absorbing vitamin B12 from supplements, so it's better to stay on the safe side by aiming to consume well over the minimum recommended amount, rather than taking a little less or sticking to the RDI
Copper deficiency, if suspected is treated by administering copper containing salts such as copper sulphate or copper glycinate
If the intestines find it difficult to absorb and break down vitamin B12 from food sources, it can cause a deficiency