In what manner does nonspecific immunotherapy typically act?

Nonspecific immunotherapy acts primarily by stimulating a large immune response. This type of therapy enhances the overall activity of the immune system rather than targeting specific cancer cells directly. It utilizes various strategies to boost the body's natural defenses against cancer, which can include enhancing the activity of immune cells like T-cells and natural killer cells, increasing the production of cytokines, and activating various pathways that strengthen immune responses.

The approach fundamentally differs from specific immunotherapy, which seeks to target molecular or cellular markers unique to cancer cells. By promoting a broader immune response, nonspecific immunotherapy can have a more generalized effect across various types of tumors, leading to potential targeting of diverse cancer cells without necessarily pinpointing their specific characteristics.

While the other options present plausible mechanisms of action in different contexts, they do not accurately represent the core methodology of nonspecific immunotherapy. For example, increasing the number of healthy cells doesn't align with the therapeutic intent of nonspecific immunotherapy, which focuses more on enhancing the immune system itself rather than rebuilding or repairing normal cells. Similarly, decomposing tumor tissues is a more targeted approach that does not reflect the broad immunological activation seen in nonspecific therapy.