Transformable Nanosensitizer with Tumor Microenvironment‐Activated Sonodynamic Process and Calcium Release for Enhanced Cancer Immunotherapy

@CaP-mediated sonodynamic therapy elicits systemic antitumor immunity, leading to regression of non-treated distant tumors and inhibition of lung metastasis. This work paves the way to development of "smart" TME-activatable sonosensitizers with temporospatial control over antitumor responses.