A)Must be inhibited for a cell to become invasive.
B)Degrade components of the extracellular matrix.
C)Are down-regulated in most cancers.
D)A and C.
E)None of the above.

A)They degrade the extracellular matrix surrounding tumor cells.
B)They inhibit tumor cell invasion.
C)They can cleave collagen.
D)They can be expressed in macrophages.
E)All of the above.

A)Into blood vessels.
B)Into lymphatic vessels.
C)Into distant organs.
D)A and B.
E)None of the above.