Analysis of metastatic tumor cells has revealed expression of factors promoting tissue invasion. Which of the following is/are among such factors?
A.	Collagenase
B.	Plasminogen activator
C.	Fibroblast growth factor
D.	Interleukin-2
Answer:A
Analysis of metastatic tumor cells has revealed expression of factors promoting tissue invasion. Which of the following is/are among such factors?
A.	Collagenase B.	Plasminogen activator C.	Fibroblast growth factor D.	Interleukin-2