There is a not yet public company taking this forward (see edit added on my post. It’s not free it’s patented. Company (start up doing series A is called Onchilles (San Diego)

The turn around of macrophages and PMNs as cancer fighters instead of cancer protectors is emerging as a significant theme in cell therapy. This however is potentially more important as it appears to be a simple drugable biologic. It’s early of course but extremely promising.