MMP11 and neoplasm: To study the impact of MMP11 on tumor metabolism, we used high resonance magic angle spinning (HRMAS) nuclear magnetic resonance (NMR) spectroscopy to assess the metabolomic profile of tumor samples from 6-week-old PyMTTg; MMP11Tg and 10-week-old PyMTTg; MMP11KO mice as compared to their respective controls.