Which of the following statements regarding fibroblasts and their function in wound healing are true?
A.	IL-1 has both inhibitory and promotional effects on fibroblast growth
B.	TNFa stimulates fibroblast collagen synthesis
C.	IL-1 and TNFa have opposite effects on the healing of bone
D.	In human clinical trials, EGF (epithelial growth factor) has been demonstrated to accelerate epidermal regeneration in cutaneous wounds
Answer:A
Which of the following statements regarding fibroblasts and their function in wound healing are true?
A.	IL-1 has both inhibitory and promotional effects on fibroblast growth B.	TNFa stimulates fibroblast collagen synthesis C.	IL-1 and TNFa have opposite effects on the healing of bone D.	In human clinical trials, EGF (epithelial growth factor) has been demonstrated to accelerate epidermal regeneration in cutaneous wounds