Elizabeth Martin and Robert Hine. Latest Edition (7 ed.) Fully revised and updated, the sixth edition of this dictionary provides comprehensive coverage of biology, biophysics, and biochemistry, as well as key terms from medicine and palaeontology.
For example, if someone scratches a mole until it bleeds, the resulting lesion, a crust, is now a secondary skin lesion. The most common secondary skin lesions include: 1  crust: a crust, or a scab, is created when dried blood forms over a scratched and irritated skin lesion. 2  ulcer: typically caused by a bacterial infection or physical trauma. 3  scale: patches of skin cells that build up and then fall off the skin.
Another tried and true product for cleaning dried blood stains is hydrogen peroxide. Simply pour the hydrogen peroxide directly onto the stain and let sit for a about 5 to 10 minutes, then blot it with a clean sponge or rag.ips for Treating a Dry Blood Stain: 1  As a first option, soak in cold water overnight then move on to other options. 2  Before treating, don't leave a clean section of clothing under the stain. 3  Move it out from under the stain or when you treat the stain it could transfer to a clean area of clothing.