Answer:
There has stem cells around the knees.
Explanation:
After Caroline scraps her knee, the stem cells around the wound begin to rapidly grow to replace the lost cells.
The chemical messenger which is produced by macrophages, will help in rebuilding the cells and repair the wound.
Answer:
1) White blood cells
2) Multiplies
Explanation
The white blood cells helps in overseeing the healing of wound. It does this by multiplying itself in order to ensure that new tissues are formed.
