New NEET Pattern

Ans d 

Cancer cells secrete collagenases and proteases that chemically dissolve any extracellular boundaries

The three main mechanisms by which cancer cells facilitate invasion are:

1. Dissolution of Extracellular Matrix: Cancer cells secrete proteolytic enzymes, such as matrix metalloproteinases (MMPs), that break down components of the extracellular matrix. This dissolution allows cancer cells to penetrate surrounding tissues.
2. Acquisition of Mobility: Cancer cells gain enhanced motility, which enables them to move through tissues. This involves changes in cell adhesion properties and the cytoskeleton that promote movement.
3. Rise in Interstitial Pressure: While increased interstitial pressure can affect fluid dynamics within tissues, it is typically a consequence of tumor growth rather than a mechanism that facilitates invasion. Thus, it's important to clarify that this is not a primary mechanism for invasion.