{"in": ["EDTA", "antigen"], "out": ""}
{"in": [], "out": "H2O"}
{"in": ["H2O"], "out": ""}
{"in": ["3% H2O2"], "out": "TBS"}
{"in": ["TBS"], "out": ""}
{"in": [], "out": "Ab mix"}
{"in": ["Ab mix", "anti-\u03b3H2AX"], "out": "TBS"}
{"in": ["TBS"], "out": "secondary antibody"}
{"in": ["secondary antibody"], "out": "TBS"}
{"in": ["TBS"], "out": "peroxidase substrate solution"}
{"in": ["peroxidase substrate solution"], "out": "positive (irradiated skin)"}
{"in": ["positive (irradiated skin)"], "out": ""}
{"in": [""], "out": "the staining steps"}