MMP14 and neoplasm: To evaluate whether [99mTc]-(HYNIC-AF7P)(tricine)(TPPTS) can image the MT1-MMP expression in vivo by SPECT, 11.1 Mbq of [99mTc]-(HYNIC-AF7P)(tricine)(TPPTS) was administered intravenously into MT1-MMP-positive MDA-MB-231-tumor-bearing mice.