Are there any non-chemo treatment options for breast cancer that use the immune system?

A friend in a cancer support group was talking about alternative options beyond chemo, especially for women. She mentioned a new therapy involving immune cells, and that’s how I got to this article on dendritic cell therapy breast cancer. It’s based in Germany and covers how this therapy helps the immune system recognize cancer cells. Honestly, it made me feel like there’s more out there than I thought.