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.
Fake blood has many uses, whether it is for costume make up for a holiday like Halloween, a theatre play or display. The key to a successful fake blood mixture is that it looks realistic and will dry properly so you don't get very messy when using it.This fake blood will take two to ten minutes to dry, depending on how thick you make it. As it dries, the mixture will cake to the skin just like real blood.he key to a successful fake blood mixture is that it looks realistic and will dry properly so you don't get very messy when using it. This fake blood will take two to ten minutes to dry, depending on how thick you make it. As it dries, the mixture will cake to the skin just like real blood.